feat: add publisher and browser client SDK (#9)

Closes #9

docs/api/rendezvous-v1.json

@@ -207,6 +207,13 @@
               "format": "int32"
             }
           },
+          {
+            "name": "excludeFull",
+            "in": "query",
+            "schema": {
+              "type": "boolean"
+            }
+          },
           {
             "name": "cursor",
             "in": "query",
@@ -226,8 +233,18 @@
               }
             }
           },
-          "501": {
+          "400": {
-            "description": "Not Implemented",
+            "description": "Bad Request",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ApiError"
+                }
+              }
+            }
+          },
+          "503": {
+            "description": "Service Unavailable",
             "content": {
               "application/json": {
                 "schema": {
@@ -530,6 +547,40 @@
             "schema": {
               "type": "string"
             }
+          },
+          {
+            "name": "contractVersion",
+            "in": "query",
+            "required": true,
+            "schema": {
+              "type": "integer",
+              "format": "int32"
+            }
+          },
+          {
+            "name": "gameId",
+            "in": "query",
+            "required": true,
+            "schema": {
+              "type": "string"
+            }
+          },
+          {
+            "name": "environmentId",
+            "in": "query",
+            "required": true,
+            "schema": {
+              "type": "string"
+            }
+          },
+          {
+            "name": "protocolVersion",
+            "in": "query",
+            "required": true,
+            "schema": {
+              "type": "integer",
+              "format": "uint32"
+            }
           }
         ],
         "responses": {
@@ -543,8 +594,28 @@
               }
             }
           },
-          "501": {
+          "400": {
-            "description": "Not Implemented",
+            "description": "Bad Request",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ApiError"
+                }
+              }
+            }
+          },
+          "404": {
+            "description": "Not Found",
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ApiError"
+                }
+              }
+            }
+          },
+          "503": {
+            "description": "Service Unavailable",
             "content": {
               "application/json": {
                 "schema": {

docs/architecture/0006-compatible-session-browser.md

@@ -0,0 +1,51 @@
+# ADR 0006: bounded compatible session browser
+
+- Status: Accepted
+- Date: 2026-07-16
+- Tracking: #8
+
+## Decision
+
+The public list endpoint requires game, environment, and exact gameplay protocol.
+Region is optional, page size is 1–100, and callers may exclude sessions whose
+advisory current-player count has reached the advertised maximum. Lists contain
+public sessions only and only while both lease and authenticated host presence are
+fresh. Unlisted sessions never appear in a list; they may be retrieved directly by
+their 128-bit unguessable listing ID only when the caller also supplies the exact
+game, environment, and protocol scope.
+
+Results use ascending opaque listing ID as a deterministic keyset. A cursor carries
+the last ID plus every compatibility/filter field, a five-minute expiry, and an
+HMAC-SHA256 signature under a per-process key. Tampering, expiry, or reuse with a
+different tenant/protocol/region/full filter returns `InvalidRequest`. Restart
+rotates the key, matching the loss of ephemeral listings.
+
+Pagination is a bounded live view, not a database snapshot. A record that remains
+eligible and whose ID is greater than the cursor is returned exactly once. Records
+removed or made stale disappear immediately. A record created after a page whose ID
+sorts before that page's cursor is outside that traversal; callers refresh from the
+first page to discover new sessions. This avoids skips or duplicates among stable
+eligible records without retaining per-browser snapshot state.
+
+The store reads at most page size plus one record. The service serializes against
+the 256 KiB response ceiling and shortens a page before returning it when metadata
+makes the requested count too large. A continuation cursor is emitted whenever an
+extra or byte-trimmed record remains. All cursor, page, metadata, property, scalar,
+and collection sizes are bounded before untrusted allocation can grow without a
+ceiling.
+
+Browser DTOs are fresh copies containing only opaque listing ID, exact compatibility,
+region, visibility/trust presentation, advisory capacity, build/display labels, and
+policy-validated string metadata. They contain no observed endpoint, lease,
+capability, ticket, credential fingerprint, derivation salt, principal subject, or
+store key. Metadata is display text: JSON encoding escapes markup, but game UI must
+still render values as text and must never execute markup, interpret endpoints, or
+use metadata for authorization.
+
+## Consequences
+
+- Cross-game, cross-environment, incompatible, stale, revoked, expired, unlisted,
+  and optionally full sessions are removed before response construction.
+- Direct unlisted lookup is suitable for an out-of-band invite carrying the opaque
+  ID; human join codes remain future work and require their own bounded abuse model.
+- Host capacity remains advisory. The host makes the final admission decision.

docs/architecture/0007-caller-owned-dotnet-client-sdk.md

@@ -0,0 +1,53 @@
+# ADR 0007: caller-owned .NET publisher and browser SDK
+
+- Status: Accepted
+- Date: 2026-07-16
+- Tracking: #9
+
+## Decision
+
+The .NET client package exposes separate publisher and browser interfaces plus
+concrete clients over a caller-supplied `HttpClient`. The caller owns that client,
+its handler, base address, connection pool, proxy, and lifetime. SDK operations
+dispose every request, response, and response body they create, but never dispose
+the supplied client. The package targets `netstandard2.1`, depends only on the
+wire-contract package and LiteNetLib, and contains no Godot types, global client,
+service URL, publisher secret, or embedded game credential.
+
+Every operation returns `RendezvousClientResult<T>` with a stable error code,
+message, and optional retry guidance. Cancellation remains exceptional through
+the caller's `CancellationToken`; transport failures become `ServiceUnavailable`.
+Response bodies are streamed under the contract's 256 KiB browser ceiling before
+deserialization. Invalid or oversized success bodies become `InternalError` and
+never escape as partially trusted contract objects.
+
+The SDK retries only operations whose duplicate execution is safe: scoped reads,
+idempotency-keyed registration, lease renewal with the same lease token, complete
+resource update, and lease-token deregistration. It honors bounded server retry
+guidance and otherwise uses capped exponential backoff with jitter. Each retry
+creates a fresh HTTP request while preserving the caller's registration
+idempotency key. Configuration is copied on construction so later option mutation
+cannot change an in-flight client's behavior.
+
+`PublishedSession` holds the server-issued lease and presence capabilities needed
+by the host. Its string representation always redacts them. Update requests are
+copied before the lease token is attached, so the SDK never mutates caller-owned
+DTOs. The browser exposes one-page calls and bounded cursor traversal; cursor
+values remain opaque and caller requests remain unchanged.
+
+Lease maintenance is explicit. Creating a `SessionLeaseMaintainer` starts no task;
+the game chooses when to call `RunAsync`, owns cancellation, and awaits
+`DisposeAsync`. The loop uses the latest server-provided renewal interval and
+returns a distinct cancelled, disposed, lost-lease, or failed result. Terminal
+authorization, expiry, and missing-lease responses also raise `LeaseLost` so the
+host can stop advertising or re-register deliberately.
+
+## Consequences
+
+- SpaceGame and Unscouted can inject the publisher/browser interfaces in tests
+  without an engine runtime or real network.
+- Games must configure an absolute `HttpClient.BaseAddress` (or equivalent
+  handler routing), obtain publisher credentials from their deployment boundary,
+  and explicitly run and dispose lease maintenance.
+- The versioned client public-API snapshot and live-server integration tests fail
+  together when SDK and HTTP contracts drift.

docs/architecture/README.md

@@ -8,6 +8,8 @@ decision requires a superseding ADR and corresponding contract/test updates.
 - [ADR 0003: state, privacy, availability, and safety budgets](0003-state-privacy-availability-and-budgets.md)
 - [ADR 0004: atomic ephemeral state and single-active availability](0004-atomic-ephemeral-state.md)
 - [ADR 0005: authenticated session lease and presence lifecycle](0005-session-lease-lifecycle.md)
+- [ADR 0006: bounded compatible session browser](0006-compatible-session-browser.md)
+- [ADR 0007: caller-owned .NET publisher and browser SDK](0007-caller-owned-dotnet-client-sdk.md)
 - [Threat model](../security/threat-model.md)
 - [Security promise and test matrix](../security/control-matrix.md)
 - [Versioned HTTP and UDP contracts](../contracts/README.md)

src/FinalFactory.Rendezvous.Client/FinalFactory.Rendezvous.Client.csproj

@@ -5,10 +5,12 @@
     <RootNamespace>FinalFactory.Rendezvous.Client</RootNamespace>
     <IsPackable>true</IsPackable>
     <PackageId>FinalFactory.Rendezvous.Client</PackageId>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
     <Description>Godot-independent client SDK for Final Factory Rendezvous.</Description>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="../FinalFactory.Rendezvous.Contracts/FinalFactory.Rendezvous.Contracts.csproj" />
     <PackageReference Include="LiteNetLib" />
+    <None Update="README.md" Pack="true" PackagePath="\" />
   </ItemGroup>
 </Project>

src/FinalFactory.Rendezvous.Client/README.md

@@ -0,0 +1,61 @@
+# FinalFactory.Rendezvous.Client
+
+Godot-independent .NET publisher and session-browser SDK for Rendezvous v1.
+The package targets `netstandard2.1` and uses a caller-owned `HttpClient`.
+
+```csharp
+using FinalFactory.Rendezvous.Client;
+using FinalFactory.Rendezvous.Contracts;
+
+using HttpClient http = new()
+{
+    BaseAddress = new Uri("https://rendezvous.example/"),
+};
+
+string publisherCredential = Environment.GetEnvironmentVariable(
+    "RENDEZVOUS_PUBLISHER_CREDENTIAL")
+    ?? throw new InvalidOperationException("Publisher credential is not configured.");
+CancellationToken cancellationToken = default;
+RendezvousPublisherClient publisher = new(http);
+RendezvousClientResult<PublishedSession> registered = await publisher.RegisterAsync(
+    new RegisterSessionRequest
+    {
+        IdempotencyKey = Guid.NewGuid().ToString("N"),
+        GameId = new("space-game"),
+        EnvironmentId = new("production"),
+        RegionId = new("eu-central"),
+        ProtocolVersion = 7,
+        BuildVersion = "1.0.0",
+        DisplayName = "My server",
+        Visibility = ListingVisibility.Public,
+        Capacity = new() { CurrentPlayers = 1, MaximumPlayers = 8 },
+    },
+    publisherCredential,
+    cancellationToken);
+if (!registered.IsSuccess || registered.Value is null)
+{
+    throw new InvalidOperationException(
+        $"Registration failed: {registered.Error} ({registered.Message})");
+}
+```
+
+Load `publisherCredential` from the game's deployment secret boundary; never
+embed it in a client build or source control. A successful registration returns a
+`PublishedSession` containing the lease and host-presence capabilities.
+
+Lease renewal is explicit and caller-controlled:
+
+```csharp
+PublishedSession session = registered.Value;
+await using SessionLeaseMaintainer maintainer = publisher.CreateLeaseMaintainer(
+    session,
+    publisherCredential);
+LeaseMaintenanceResult stopped = await maintainer.RunAsync(cancellationToken);
+```
+
+Creating the maintainer does not start background work. Await its run and dispose
+it when hosting stops. Use `IRendezvousPublisherClient` and
+`IRendezvousSessionBrowserClient` as injection seams in game tests. The SDK disposes
+the requests and responses it creates but never disposes the supplied `HttpClient`.
+
+See the repository's ADR 0007 for retry, paging, ownership, and failure semantics.

src/FinalFactory.Rendezvous.Client/RendezvousClientAbstractions.cs

@@ -0,0 +1,141 @@
+using FinalFactory.Rendezvous.Contracts;
+
+namespace FinalFactory.Rendezvous.Client;
+
+public sealed class RendezvousClientResult<T>
+{
+    internal RendezvousClientResult(
+        RendezvousErrorCode error,
+        T? value,
+        string message,
+        int? retryAfterSeconds)
+    {
+        Error = error;
+        Value = value;
+        Message = message;
+        RetryAfterSeconds = retryAfterSeconds;
+    }
+
+    public bool IsSuccess => Error == RendezvousErrorCode.None;
+    public RendezvousErrorCode Error { get; }
+    public T? Value { get; }
+    public string Message { get; }
+    public int? RetryAfterSeconds { get; }
+
+}
+
+public static class RendezvousClientResult
+{
+    public static RendezvousClientResult<T> Success<T>(T value) =>
+        value is null
+            ? throw new ArgumentNullException(nameof(value))
+            : new(RendezvousErrorCode.None, value, string.Empty, null);
+
+    public static RendezvousClientResult<T> Failure<T>(
+        RendezvousErrorCode error,
+        string message,
+        int? retryAfterSeconds = null) =>
+        error == RendezvousErrorCode.None
+            ? throw new ArgumentException("A failure requires a non-success error.", nameof(error))
+            : new(error, default, message ?? string.Empty, retryAfterSeconds);
+}
+
+public sealed class PublishedSession
+{
+    internal PublishedSession(RegisterSessionResponse response)
+    {
+        ListingId = response.ListingId;
+        LeaseId = response.LeaseId;
+        LeaseToken = response.LeaseToken;
+        HostPresenceHandle = response.HostPresenceHandle;
+        HostPresenceCapability = response.HostPresenceCapability;
+        ExpiresAt = response.ExpiresAt;
+        LeaseRenewAfterSeconds = response.LeaseRenewAfterSeconds;
+        HostPresenceRefreshAfterSeconds = response.HostPresenceRefreshAfterSeconds;
+    }
+
+    public SessionListingId ListingId { get; }
+    public LeaseId LeaseId { get; }
+    public string LeaseToken { get; }
+    public MediationHandle HostPresenceHandle { get; }
+    public string HostPresenceCapability { get; }
+    public DateTimeOffset ExpiresAt { get; internal set; }
+    public int LeaseRenewAfterSeconds { get; internal set; }
+    public int HostPresenceRefreshAfterSeconds { get; }
+
+    public override string ToString() => $"[PublishedSession {ListingId}; credentials redacted]";
+}
+
+public interface IRendezvousPublisherClient
+{
+    Task<RendezvousClientResult<PublishedSession>> RegisterAsync(
+        RegisterSessionRequest request,
+        string publisherCredential,
+        CancellationToken cancellationToken = default);
+
+    Task<RendezvousClientResult<RenewLeaseResponse>> RenewAsync(
+        PublishedSession session,
+        string publisherCredential,
+        CancellationToken cancellationToken = default);
+
+    Task<RendezvousClientResult<bool>> UpdateAsync(
+        PublishedSession session,
+        UpdateSessionRequest request,
+        string publisherCredential,
+        CancellationToken cancellationToken = default);
+
+    Task<RendezvousClientResult<bool>> DeregisterAsync(
+        PublishedSession session,
+        string publisherCredential,
+        CancellationToken cancellationToken = default);
+}
+
+public interface IRendezvousSessionBrowserClient
+{
+    Task<RendezvousClientResult<BrowseSessionsResponse>> BrowseAsync(
+        BrowseSessionsRequest request,
+        CancellationToken cancellationToken = default);
+
+    Task<RendezvousClientResult<IReadOnlyList<SessionListing>>> BrowseAllAsync(
+        BrowseSessionsRequest request,
+        int maximumPages = 100,
+        CancellationToken cancellationToken = default);
+
+    Task<RendezvousClientResult<GetSessionResponse>> GetAsync(
+        SessionListingId listingId,
+        GameId gameId,
+        EnvironmentId environmentId,
+        uint protocolVersion,
+        CancellationToken cancellationToken = default);
+}
+
+public interface IRendezvousDelay
+{
+    Task DelayAsync(TimeSpan delay, CancellationToken cancellationToken);
+}
+
+public sealed class RendezvousClientOptions
+{
+    public int MaximumSafeRetries { get; set; } = 2;
+    public TimeSpan InitialRetryDelay { get; set; } = TimeSpan.FromMilliseconds(200);
+    public TimeSpan MaximumRetryDelay { get; set; } = TimeSpan.FromSeconds(2);
+    public double JitterRatio { get; set; } = 0.2;
+
+    internal void Validate()
+    {
+        if (MaximumSafeRetries is < 0 or > 5
+            || InitialRetryDelay < TimeSpan.Zero
+            || MaximumRetryDelay < InitialRetryDelay
+            || MaximumRetryDelay > TimeSpan.FromSeconds(30)
+            || JitterRatio is < 0 or > 1)
+        {
+            throw new ArgumentOutOfRangeException(nameof(RendezvousClientOptions));
+        }
+    }
+}
+
+internal sealed class SystemRendezvousDelay : IRendezvousDelay
+{
+    public Task DelayAsync(TimeSpan delay, CancellationToken cancellationToken) =>
+        Task.Delay(delay, cancellationToken);
+}

src/FinalFactory.Rendezvous.Client/RendezvousHttpTransport.cs

@@ -0,0 +1,242 @@
+using System.Net;
+using System.Net.Http.Headers;
+using System.Security.Cryptography;
+using System.Text;
+using System.Text.Json;
+using FinalFactory.Rendezvous.Contracts;
+
+namespace FinalFactory.Rendezvous.Client;
+
+internal sealed class RendezvousHttpTransport
+{
+    private readonly HttpClient _httpClient;
+    private readonly RendezvousClientOptions _options;
+    private readonly IRendezvousDelay _delay;
+
+    internal RendezvousHttpTransport(
+        HttpClient httpClient,
+        RendezvousClientOptions? options,
+        IRendezvousDelay? delay)
+    {
+        _httpClient = httpClient ?? throw new ArgumentNullException(nameof(httpClient));
+        RendezvousClientOptions suppliedOptions = options ?? new RendezvousClientOptions();
+        suppliedOptions.Validate();
+        _options = new RendezvousClientOptions
+        {
+            MaximumSafeRetries = suppliedOptions.MaximumSafeRetries,
+            InitialRetryDelay = suppliedOptions.InitialRetryDelay,
+            MaximumRetryDelay = suppliedOptions.MaximumRetryDelay,
+            JitterRatio = suppliedOptions.JitterRatio,
+        };
+        _delay = delay ?? new SystemRendezvousDelay();
+    }
+
+    internal async Task<RendezvousClientResult<T>> SendSafeAsync<T>(
+        Func<HttpRequestMessage> requestFactory,
+        CancellationToken cancellationToken)
+    {
+        for (int attempt = 0; ; attempt++)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            try
+            {
+                using HttpRequestMessage request = requestFactory();
+                using HttpResponseMessage response = await _httpClient
+                    .SendAsync(request, HttpCompletionOption.ResponseHeadersRead, cancellationToken)
+                    .ConfigureAwait(false);
+                if (response.IsSuccessStatusCode)
+                {
+                    if (typeof(T) == typeof(bool) && response.StatusCode == HttpStatusCode.NoContent)
+                    {
+                        return RendezvousClientResult.Success((T)(object)true);
+                    }
+
+                    byte[] payload;
+                    try
+                    {
+                        payload = await ReadBoundedAsync(response.Content, cancellationToken)
+                            .ConfigureAwait(false);
+                    }
+                    catch (InvalidDataException)
+                    {
+                        return RendezvousClientResult.Failure<T>(
+                            RendezvousErrorCode.InternalError,
+                            "The service returned an oversized success response.");
+                    }
+
+                    T? value;
+                    try
+                    {
+                        value = JsonSerializer.Deserialize<T>(payload, ContractJson.Options);
+                    }
+                    catch (JsonException)
+                    {
+                        value = default;
+                    }
+
+                    return value is null
+                        ? RendezvousClientResult.Failure<T>(
+                            RendezvousErrorCode.InternalError,
+                            "The service returned an invalid success response.")
+                        : RendezvousClientResult.Success(value);
+                }
+
+                ApiError error = await ReadErrorAsync(response, cancellationToken).ConfigureAwait(false);
+                int? retryAfter = error.RetryAfterSeconds ?? GetRetryAfterSeconds(response.Headers.RetryAfter);
+                if (attempt < _options.MaximumSafeRetries && IsTransient(error.Code))
+                {
+                    await _delay.DelayAsync(
+                        GetRetryDelay(attempt, retryAfter),
+                        cancellationToken).ConfigureAwait(false);
+                    continue;
+                }
+
+                return RendezvousClientResult.Failure<T>(error.Code, error.Message, retryAfter);
+            }
+            catch (Exception exception) when (
+                IsTransientTransportFailure(exception, cancellationToken)
+                && attempt < _options.MaximumSafeRetries)
+            {
+                await _delay.DelayAsync(GetRetryDelay(attempt, null), cancellationToken)
+                    .ConfigureAwait(false);
+            }
+            catch (Exception exception) when (IsTransientTransportFailure(exception, cancellationToken))
+            {
+                return RendezvousClientResult.Failure<T>(
+                    RendezvousErrorCode.ServiceUnavailable,
+                    "The Rendezvous service did not return a valid response.");
+            }
+        }
+    }
+
+    internal static HttpRequestMessage JsonRequest<T>(
+        HttpMethod method,
+        string uri,
+        T body,
+        string? publisherCredential = null)
+    {
+        HttpRequestMessage request = new(method, uri)
+        {
+            Content = new StringContent(
+                JsonSerializer.Serialize(body, ContractJson.Options),
+                Encoding.UTF8,
+                "application/json"),
+        };
+        if (publisherCredential is not null)
+        {
+            request.Headers.Authorization = new AuthenticationHeaderValue(
+                "Bearer",
+                RequireCredential(publisherCredential));
+        }
+
+        return request;
+    }
+
+    internal static string RequireCredential(string credential) =>
+        !string.IsNullOrWhiteSpace(credential)
+            ? credential
+            : throw new ArgumentException("A publisher credential is required.", nameof(credential));
+
+    private static async Task<ApiError> ReadErrorAsync(
+        HttpResponseMessage response,
+        CancellationToken cancellationToken)
+    {
+        try
+        {
+            byte[] payload = await ReadBoundedAsync(response.Content, cancellationToken)
+                .ConfigureAwait(false);
+            ApiError? error = JsonSerializer.Deserialize<ApiError>(payload, ContractJson.Options);
+            return error is not null && error.Code != RendezvousErrorCode.None
+                ? error
+                : FallbackError(response.StatusCode);
+        }
+        catch (Exception exception) when (exception is JsonException or InvalidDataException)
+        {
+            return FallbackError(response.StatusCode);
+        }
+    }
+
+    private static async Task<byte[]> ReadBoundedAsync(
+        HttpContent content,
+        CancellationToken cancellationToken)
+    {
+        using Stream source = await content.ReadAsStreamAsync().ConfigureAwait(false);
+        using MemoryStream destination = new();
+        byte[] buffer = new byte[8192];
+        while (true)
+        {
+            int read = await source.ReadAsync(buffer.AsMemory(), cancellationToken)
+                .ConfigureAwait(false);
+            if (read == 0)
+            {
+                return destination.ToArray();
+            }
+
+            if (destination.Length + read > ContractLimits.BrowserResponseMaxBytes)
+            {
+                throw new InvalidDataException("The service response exceeded the SDK limit.");
+            }
+
+            await destination.WriteAsync(buffer.AsMemory(0, read), cancellationToken)
+                .ConfigureAwait(false);
+        }
+    }
+
+    private TimeSpan GetRetryDelay(int attempt, int? retryAfterSeconds)
+    {
+        TimeSpan basis = retryAfterSeconds.HasValue
+            ? TimeSpan.FromSeconds(Math.Max(0, retryAfterSeconds.Value))
+            : TimeSpan.FromMilliseconds(
+                _options.InitialRetryDelay.TotalMilliseconds * Math.Pow(2, attempt));
+        double bounded = Math.Min(basis.TotalMilliseconds, _options.MaximumRetryDelay.TotalMilliseconds);
+        if (_options.JitterRatio == 0 || bounded == 0)
+        {
+            return TimeSpan.FromMilliseconds(bounded);
+        }
+
+        byte[] random = new byte[1];
+        RandomNumberGenerator.Fill(random);
+        double unit = random[0] / 255d;
+        double multiplier = 1 - _options.JitterRatio + (2 * _options.JitterRatio * unit);
+        return TimeSpan.FromMilliseconds(Math.Min(
+            bounded * multiplier,
+            _options.MaximumRetryDelay.TotalMilliseconds));
+    }
+
+    private static bool IsTransient(RendezvousErrorCode code) => code is
+        RendezvousErrorCode.RateLimited
+        or RendezvousErrorCode.CapacityExceeded
+        or RendezvousErrorCode.ServiceUnavailable;
+
+    private static bool IsTransientTransportFailure(
+        Exception exception,
+        CancellationToken callerCancellation) =>
+        exception is HttpRequestException
+        or IOException
+        || exception is OperationCanceledException && !callerCancellation.IsCancellationRequested;
+
+    private static int? GetRetryAfterSeconds(RetryConditionHeaderValue? retryAfter) =>
+        retryAfter?.Delta is TimeSpan delta
+            ? Math.Max(0, (int)Math.Ceiling(delta.TotalSeconds))
+            : null;
+
+    private static ApiError FallbackError(HttpStatusCode statusCode) => new()
+    {
+        Code = statusCode switch
+        {
+            HttpStatusCode.BadRequest => RendezvousErrorCode.InvalidRequest,
+            HttpStatusCode.Unauthorized => RendezvousErrorCode.AuthenticationRequired,
+            HttpStatusCode.Forbidden => RendezvousErrorCode.Forbidden,
+            HttpStatusCode.NotFound => RendezvousErrorCode.NotFound,
+            HttpStatusCode.Conflict => RendezvousErrorCode.Conflict,
+            HttpStatusCode.Gone => RendezvousErrorCode.Expired,
+            HttpStatusCode.TooManyRequests => RendezvousErrorCode.RateLimited,
+            HttpStatusCode.RequestTimeout => RendezvousErrorCode.ServiceUnavailable,
+            HttpStatusCode.BadGateway => RendezvousErrorCode.ServiceUnavailable,
+            HttpStatusCode.ServiceUnavailable => RendezvousErrorCode.ServiceUnavailable,
+            HttpStatusCode.GatewayTimeout => RendezvousErrorCode.ServiceUnavailable,
+            _ => RendezvousErrorCode.InternalError,
+        },
+        Message = "The service returned an error without a valid Rendezvous envelope.",
+    };
+}

src/FinalFactory.Rendezvous.Client/RendezvousPublisherClient.cs

@@ -0,0 +1,151 @@
+using FinalFactory.Rendezvous.Contracts;
+
+namespace FinalFactory.Rendezvous.Client;
+
+public sealed class RendezvousPublisherClient : IRendezvousPublisherClient
+{
+    private readonly RendezvousHttpTransport _transport;
+    private readonly IRendezvousDelay _delay;
+
+    public RendezvousPublisherClient(
+        HttpClient httpClient,
+        RendezvousClientOptions? options = null,
+        IRendezvousDelay? delay = null)
+    {
+        _delay = delay ?? new SystemRendezvousDelay();
+        _transport = new(httpClient, options, _delay);
+    }
+
+    public async Task<RendezvousClientResult<PublishedSession>> RegisterAsync(
+        RegisterSessionRequest request,
+        string publisherCredential,
+        CancellationToken cancellationToken = default)
+    {
+        if (request is null)
+        {
+            throw new ArgumentNullException(nameof(request));
+        }
+
+        RegisterSessionRequest body = CopyRegistration(request);
+        RendezvousClientResult<RegisterSessionResponse> result = await _transport.SendSafeAsync<RegisterSessionResponse>(
+            () => RendezvousHttpTransport.JsonRequest(HttpMethod.Post, "v1/sessions", body, publisherCredential),
+            cancellationToken).ConfigureAwait(false);
+        return result.IsSuccess && result.Value is not null
+            ? RendezvousClientResult.Success(new PublishedSession(result.Value))
+            : RendezvousClientResult.Failure<PublishedSession>(
+                result.Error,
+                result.Message,
+                result.RetryAfterSeconds);
+    }
+
+    public async Task<RendezvousClientResult<RenewLeaseResponse>> RenewAsync(
+        PublishedSession session,
+        string publisherCredential,
+        CancellationToken cancellationToken = default)
+    {
+        if (session is null)
+        {
+            throw new ArgumentNullException(nameof(session));
+        }
+
+        RendezvousClientResult<RenewLeaseResponse> result = await _transport.SendSafeAsync<RenewLeaseResponse>(
+            () => RendezvousHttpTransport.JsonRequest(
+                HttpMethod.Post,
+                $"v1/sessions/{session.ListingId}/renew",
+                new RenewLeaseRequest { LeaseToken = session.LeaseToken },
+                publisherCredential),
+            cancellationToken).ConfigureAwait(false);
+        if (result.IsSuccess && result.Value is not null)
+        {
+            session.ExpiresAt = result.Value.ExpiresAt;
+            session.LeaseRenewAfterSeconds = result.Value.RenewAfterSeconds;
+        }
+
+        return result;
+    }
+
+    public Task<RendezvousClientResult<bool>> UpdateAsync(
+        PublishedSession session,
+        UpdateSessionRequest request,
+        string publisherCredential,
+        CancellationToken cancellationToken = default)
+    {
+        if (session is null)
+        {
+            throw new ArgumentNullException(nameof(session));
+        }
+
+        if (request is null)
+        {
+            throw new ArgumentNullException(nameof(request));
+        }
+
+        UpdateSessionRequest body = new()
+        {
+            ContractVersion = request.ContractVersion,
+            LeaseToken = session.LeaseToken,
+            BuildVersion = request.BuildVersion,
+            DisplayName = request.DisplayName,
+            Capacity = CopyCapacity(request.Capacity),
+            Metadata = CopyMetadata(request.Metadata),
+        };
+        return _transport.SendSafeAsync<bool>(
+            () => RendezvousHttpTransport.JsonRequest(
+                HttpMethod.Put,
+                $"v1/sessions/{session.ListingId}",
+                body,
+                publisherCredential),
+            cancellationToken);
+    }
+
+    public Task<RendezvousClientResult<bool>> DeregisterAsync(
+        PublishedSession session,
+        string publisherCredential,
+        CancellationToken cancellationToken = default)
+    {
+        if (session is null)
+        {
+            throw new ArgumentNullException(nameof(session));
+        }
+
+        return _transport.SendSafeAsync<bool>(
+            () => RendezvousHttpTransport.JsonRequest(
+                HttpMethod.Delete,
+                $"v1/sessions/{session.ListingId}",
+                new DeleteSessionRequest { LeaseToken = session.LeaseToken },
+                publisherCredential),
+            cancellationToken);
+    }
+
+    public SessionLeaseMaintainer CreateLeaseMaintainer(
+        PublishedSession session,
+        string publisherCredential) => new(
+            this,
+            session ?? throw new ArgumentNullException(nameof(session)),
+            RendezvousHttpTransport.RequireCredential(publisherCredential),
+            _delay);
+
+    private static RegisterSessionRequest CopyRegistration(RegisterSessionRequest request) => new()
+    {
+        ContractVersion = request.ContractVersion,
+        IdempotencyKey = request.IdempotencyKey,
+        GameId = request.GameId,
+        EnvironmentId = request.EnvironmentId,
+        RegionId = request.RegionId,
+        ProtocolVersion = request.ProtocolVersion,
+        BuildVersion = request.BuildVersion,
+        DisplayName = request.DisplayName,
+        Visibility = request.Visibility,
+        Capacity = CopyCapacity(request.Capacity),
+        Metadata = CopyMetadata(request.Metadata),
+    };
+
+    private static SessionCapacity CopyCapacity(SessionCapacity capacity) => new()
+    {
+        CurrentPlayers = capacity.CurrentPlayers,
+        MaximumPlayers = capacity.MaximumPlayers,
+    };
+
+    private static Dictionary<string, string> CopyMetadata(Dictionary<string, string> metadata) =>
+        new(metadata, StringComparer.Ordinal);
+}

src/FinalFactory.Rendezvous.Client/RendezvousSessionBrowserClient.cs

@@ -0,0 +1,110 @@
+using FinalFactory.Rendezvous.Contracts;
+
+namespace FinalFactory.Rendezvous.Client;
+
+public sealed class RendezvousSessionBrowserClient : IRendezvousSessionBrowserClient
+{
+    private readonly RendezvousHttpTransport _transport;
+
+    public RendezvousSessionBrowserClient(
+        HttpClient httpClient,
+        RendezvousClientOptions? options = null,
+        IRendezvousDelay? delay = null)
+    {
+        _transport = new(httpClient, options, delay);
+    }
+
+    public Task<RendezvousClientResult<BrowseSessionsResponse>> BrowseAsync(
+        BrowseSessionsRequest request,
+        CancellationToken cancellationToken = default)
+    {
+        if (request is null)
+        {
+            throw new ArgumentNullException(nameof(request));
+        }
+
+        string query = $"v1/sessions?contractVersion={request.ContractVersion}"
+            + $"&gameId={Escape(request.GameId.Value)}"
+            + $"&environmentId={Escape(request.EnvironmentId.Value)}"
+            + $"&protocolVersion={request.ProtocolVersion}"
+            + $"&pageSize={request.PageSize}"
+            + $"&excludeFull={request.ExcludeFull.ToString().ToLowerInvariant()}"
+            + (request.RegionId.HasValue ? $"&regionId={Escape(request.RegionId.Value.Value)}" : string.Empty)
+            + (request.Cursor is not null ? $"&cursor={Escape(request.Cursor)}" : string.Empty);
+        return _transport.SendSafeAsync<BrowseSessionsResponse>(
+            () => new HttpRequestMessage(HttpMethod.Get, query),
+            cancellationToken);
+    }
+
+    public async Task<RendezvousClientResult<IReadOnlyList<SessionListing>>> BrowseAllAsync(
+        BrowseSessionsRequest request,
+        int maximumPages = 100,
+        CancellationToken cancellationToken = default)
+    {
+        if (request is null)
+        {
+            throw new ArgumentNullException(nameof(request));
+        }
+
+        if (maximumPages is < 1 or > 1000)
+        {
+            throw new ArgumentOutOfRangeException(nameof(maximumPages));
+        }
+
+        List<SessionListing> items = [];
+        string? cursor = request.Cursor;
+        for (int page = 0; page < maximumPages; page++)
+        {
+            BrowseSessionsRequest pageRequest = new()
+            {
+                ContractVersion = request.ContractVersion,
+                GameId = request.GameId,
+                EnvironmentId = request.EnvironmentId,
+                ProtocolVersion = request.ProtocolVersion,
+                RegionId = request.RegionId,
+                PageSize = request.PageSize,
+                ExcludeFull = request.ExcludeFull,
+                Cursor = cursor,
+            };
+            RendezvousClientResult<BrowseSessionsResponse> result = await BrowseAsync(
+                pageRequest,
+                cancellationToken).ConfigureAwait(false);
+            if (!result.IsSuccess || result.Value is null)
+            {
+                return RendezvousClientResult.Failure<IReadOnlyList<SessionListing>>(
+                    result.Error,
+                    result.Message,
+                    result.RetryAfterSeconds);
+            }
+
+            items.AddRange(result.Value.Items);
+            cursor = result.Value.NextCursor;
+            if (string.IsNullOrEmpty(cursor))
+            {
+                return RendezvousClientResult.Success<IReadOnlyList<SessionListing>>(items.AsReadOnly());
+            }
+        }
+
+        return RendezvousClientResult.Failure<IReadOnlyList<SessionListing>>(
+            RendezvousErrorCode.CapacityExceeded,
+            $"Browsing exceeded the configured {maximumPages}-page limit.");
+    }
+
+    public Task<RendezvousClientResult<GetSessionResponse>> GetAsync(
+        SessionListingId listingId,
+        GameId gameId,
+        EnvironmentId environmentId,
+        uint protocolVersion,
+        CancellationToken cancellationToken = default)
+    {
+        string query = $"v1/sessions/{listingId}?contractVersion={ContractLimits.ContractVersion}"
+            + $"&gameId={Escape(gameId.Value)}"
+            + $"&environmentId={Escape(environmentId.Value)}"
+            + $"&protocolVersion={protocolVersion}";
+        return _transport.SendSafeAsync<GetSessionResponse>(
+            () => new HttpRequestMessage(HttpMethod.Get, query),
+            cancellationToken);
+    }
+
+    private static string Escape(string value) => Uri.EscapeDataString(value ?? string.Empty);
+}

src/FinalFactory.Rendezvous.Client/SessionLeaseMaintainer.cs

@@ -0,0 +1,150 @@
+using FinalFactory.Rendezvous.Contracts;
+
+namespace FinalFactory.Rendezvous.Client;
+
+public enum LeaseMaintenanceStopReason
+{
+    Cancelled = 1,
+    Disposed = 2,
+    LeaseLost = 3,
+    Failed = 4,
+}
+
+public sealed class LeaseMaintenanceResult
+{
+    internal LeaseMaintenanceResult(LeaseMaintenanceStopReason reason, RendezvousErrorCode error)
+    {
+        Reason = reason;
+        Error = error;
+    }
+
+    public LeaseMaintenanceStopReason Reason { get; }
+    public RendezvousErrorCode Error { get; }
+}
+
+public sealed class SessionLeaseMaintainer : IAsyncDisposable
+{
+    private readonly object _gate = new();
+    private readonly IRendezvousPublisherClient _publisher;
+    private readonly PublishedSession _session;
+    private readonly string _publisherCredential;
+    private readonly IRendezvousDelay _delay;
+    private readonly CancellationTokenSource _disposeCancellation = new();
+    private Task<LeaseMaintenanceResult>? _activeRun;
+    private Task? _disposeTask;
+    private bool _disposed;
+
+    internal SessionLeaseMaintainer(
+        IRendezvousPublisherClient publisher,
+        PublishedSession session,
+        string publisherCredential,
+        IRendezvousDelay? delay = null)
+    {
+        _publisher = publisher;
+        _session = session;
+        _publisherCredential = publisherCredential;
+        _delay = delay ?? new SystemRendezvousDelay();
+    }
+
+    public event EventHandler? LeaseLost;
+
+    public Task<LeaseMaintenanceResult> RunAsync(CancellationToken cancellationToken = default)
+    {
+        lock (_gate)
+        {
+            if (_disposed)
+            {
+                throw new ObjectDisposedException(nameof(SessionLeaseMaintainer));
+            }
+            if (_activeRun is not null)
+            {
+                throw new InvalidOperationException("Lease maintenance is already running.");
+            }
+
+            _activeRun = RunCoreAsync(cancellationToken);
+            return _activeRun;
+        }
+    }
+
+    public ValueTask DisposeAsync()
+    {
+        lock (_gate)
+        {
+            if (_disposeTask is not null)
+            {
+                return new(_disposeTask);
+            }
+
+            _disposed = true;
+            _disposeCancellation.Cancel();
+            _disposeTask = FinishDisposeAsync(_activeRun);
+            return new(_disposeTask);
+        }
+    }
+
+    private async Task FinishDisposeAsync(Task<LeaseMaintenanceResult>? active)
+    {
+        try
+        {
+            if (active is not null)
+            {
+                await active.ConfigureAwait(false);
+            }
+        }
+        finally
+        {
+            _disposeCancellation.Dispose();
+        }
+    }
+
+    private async Task<LeaseMaintenanceResult> RunCoreAsync(CancellationToken cancellationToken)
+    {
+        await Task.Yield();
+        using CancellationTokenSource linked = CancellationTokenSource.CreateLinkedTokenSource(
+            cancellationToken,
+            _disposeCancellation.Token);
+        try
+        {
+            while (true)
+            {
+                await _delay.DelayAsync(
+                    TimeSpan.FromSeconds(Math.Max(1, _session.LeaseRenewAfterSeconds)),
+                    linked.Token).ConfigureAwait(false);
+                RendezvousClientResult<RenewLeaseResponse> renewed = await _publisher.RenewAsync(
+                    _session,
+                    _publisherCredential,
+                    linked.Token).ConfigureAwait(false);
+                if (renewed.IsSuccess)
+                {
+                    continue;
+                }
+
+                if (renewed.Error is RendezvousErrorCode.NotFound
+                    or RendezvousErrorCode.Expired
+                    or RendezvousErrorCode.Forbidden
+                    or RendezvousErrorCode.AuthenticationRequired)
+                {
+                    LeaseLost?.Invoke(this, EventArgs.Empty);
+                    return new(LeaseMaintenanceStopReason.LeaseLost, renewed.Error);
+                }
+
+                return new(LeaseMaintenanceStopReason.Failed, renewed.Error);
+            }
+        }
+        catch (OperationCanceledException) when (linked.IsCancellationRequested)
+        {
+            return new(
+                _disposeCancellation.IsCancellationRequested
+                    ? LeaseMaintenanceStopReason.Disposed
+                    : LeaseMaintenanceStopReason.Cancelled,
+                RendezvousErrorCode.None);
+        }
+        finally
+        {
+            lock (_gate)
+            {
+                _activeRun = null;
+            }
+        }
+    }
+}

src/FinalFactory.Rendezvous.Contracts/Http/SessionContracts.cs

@@ -174,6 +174,8 @@ public sealed class BrowseSessionsRequest
     public RegionId? RegionId { get; set; }
     public int PageSize { get; set; } = ContractLimits.BrowserPageMaxItems;
 
+    public bool ExcludeFull { get; set; }
+
     public string? Cursor { get; set; }
 }
 

src/FinalFactory.Rendezvous.Server/Browser/SessionBrowserCursorCodec.cs

@@ -0,0 +1,181 @@
+using System.Security.Cryptography;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using FinalFactory.Rendezvous.Contracts;
+using FinalFactory.Rendezvous.Server.State;
+
+namespace FinalFactory.Rendezvous.Server.Browser;
+
+internal sealed class SessionBrowserCursorCodec : IDisposable
+{
+    private const string Prefix = "rvc1";
+    private readonly byte[] _key = RandomNumberGenerator.GetBytes(32);
+    private bool _disposed;
+
+    public string Encode(VisibleListingQuery query, SessionListingId after, DateTimeOffset now)
+    {
+        ObjectDisposedException.ThrowIf(_disposed, this);
+        BrowserCursorPayload payload = new()
+        {
+            GameId = query.Scope.GameId.Value,
+            EnvironmentId = query.Scope.EnvironmentId.Value,
+            ProtocolVersion = query.ProtocolVersion,
+            RegionId = query.RegionId?.Value,
+            ExcludeFull = query.ExcludeFull,
+            AfterListingId = after.ToString(),
+            ExpiresAtUnixSeconds = now.AddMinutes(5).ToUnixTimeSeconds(),
+        };
+        string encoded = EncodeBytes(JsonSerializer.SerializeToUtf8Bytes(payload, ContractJson.Options));
+        string content = $"{Prefix}.{encoded}";
+        byte[] signature = HMACSHA256.HashData(_key, Encoding.ASCII.GetBytes(content));
+        try
+        {
+            string cursor = $"{content}.{EncodeBytes(signature)}";
+            return ContractValidation.IsCursorValid(cursor)
+                ? cursor
+                : throw new InvalidOperationException("The browser cursor exceeds its contract limit.");
+        }
+        finally
+        {
+            CryptographicOperations.ZeroMemory(signature);
+        }
+    }
+
+    public bool TryDecode(
+        string? cursor,
+        TenantScope scope,
+        uint protocolVersion,
+        RegionId? regionId,
+        bool excludeFull,
+        DateTimeOffset now,
+        out SessionListingId? after)
+    {
+        after = null;
+        if (cursor is null)
+        {
+            return true;
+        }
+
+        if (_disposed || !ContractValidation.IsCursorValid(cursor))
+        {
+            return false;
+        }
+
+        string[] segments = cursor.Split('.');
+        if (segments.Length != 3 || !string.Equals(segments[0], Prefix, StringComparison.Ordinal))
+        {
+            return false;
+        }
+
+        byte[] expected = HMACSHA256.HashData(
+            _key,
+            Encoding.ASCII.GetBytes($"{segments[0]}.{segments[1]}"));
+        if (!TryDecodeBytes(segments[2], out byte[] supplied))
+        {
+            CryptographicOperations.ZeroMemory(expected);
+            return false;
+        }
+
+        bool validSignature = supplied.Length == expected.Length
+            && CryptographicOperations.FixedTimeEquals(supplied, expected);
+        CryptographicOperations.ZeroMemory(supplied);
+        CryptographicOperations.ZeroMemory(expected);
+        if (!validSignature || !TryDecodeBytes(segments[1], out byte[] encodedPayload))
+        {
+            return false;
+        }
+
+        BrowserCursorPayload? payload;
+        try
+        {
+            payload = JsonSerializer.Deserialize<BrowserCursorPayload>(
+                encodedPayload,
+                ContractJson.Options);
+        }
+        catch (JsonException)
+        {
+            payload = null;
+        }
+        finally
+        {
+            CryptographicOperations.ZeroMemory(encodedPayload);
+        }
+
+        if (payload is null
+            || payload.ExpiresAtUnixSeconds <= now.ToUnixTimeSeconds()
+            || !string.Equals(payload.GameId, scope.GameId.Value, StringComparison.Ordinal)
+            || !string.Equals(payload.EnvironmentId, scope.EnvironmentId.Value, StringComparison.Ordinal)
+            || payload.ProtocolVersion != protocolVersion
+            || !string.Equals(payload.RegionId, regionId?.Value, StringComparison.Ordinal)
+            || payload.ExcludeFull != excludeFull
+            || !SessionListingId.TryParse(payload.AfterListingId, out SessionListingId listingId))
+        {
+            return false;
+        }
+
+        after = listingId;
+        return true;
+    }
+
+    public void Dispose()
+    {
+        if (!_disposed)
+        {
+            _disposed = true;
+            CryptographicOperations.ZeroMemory(_key);
+        }
+    }
+
+    public override string ToString() => "[SessionBrowserCursorCodec: key and cursors redacted]";
+
+    private static string EncodeBytes(ReadOnlySpan<byte> bytes) => Convert
+        .ToBase64String(bytes)
+        .TrimEnd('=')
+        .Replace('+', '-')
+        .Replace('/', '_');
+
+    private static bool TryDecodeBytes(string value, out byte[] bytes)
+    {
+        bytes = [];
+        if (string.IsNullOrEmpty(value)
+            || value.Any(static character =>
+                character is not (>= 'A' and <= 'Z')
+                and not (>= 'a' and <= 'z')
+                and not (>= '0' and <= '9')
+                and not '-'
+                and not '_'))
+        {
+            return false;
+        }
+
+        string padded = value.Replace('-', '+').Replace('_', '/');
+        padded += (padded.Length % 4) switch { 0 => "", 2 => "==", 3 => "=", _ => "!" };
+        try
+        {
+            bytes = Convert.FromBase64String(padded);
+            return true;
+        }
+        catch (FormatException)
+        {
+            return false;
+        }
+    }
+}
+
+internal sealed class BrowserCursorPayload
+{
+    [JsonRequired]
+    public string GameId { get; set; } = string.Empty;
+    [JsonRequired]
+    public string EnvironmentId { get; set; } = string.Empty;
+    [JsonRequired]
+    public uint ProtocolVersion { get; set; }
+    public string? RegionId { get; set; }
+    [JsonRequired]
+    public bool ExcludeFull { get; set; }
+    [JsonRequired]
+    public string AfterListingId { get; set; } = string.Empty;
+    [JsonRequired]
+    public long ExpiresAtUnixSeconds { get; set; }
+}

src/FinalFactory.Rendezvous.Server/Browser/SessionBrowserService.cs

@@ -0,0 +1,157 @@
+using System.Text.Json;
+using FinalFactory.Rendezvous.Contracts;
+using FinalFactory.Rendezvous.Server.State;
+
+namespace FinalFactory.Rendezvous.Server.Browser;
+
+internal sealed record BrowserServiceResult<T>(RendezvousErrorCode Error, T? Value = default)
+{
+    public bool Succeeded => Error == RendezvousErrorCode.None;
+}
+
+internal sealed class SessionBrowserService(
+    IEphemeralRendezvousStore store,
+    SessionBrowserCursorCodec cursors,
+    IWallClock clock)
+{
+    public BrowserServiceResult<BrowseSessionsResponse> Browse(
+        BrowseSessionsRequest request,
+        CancellationToken cancellationToken = default)
+    {
+        ArgumentNullException.ThrowIfNull(request);
+        RendezvousErrorCode validation = Validate(request);
+        if (validation != RendezvousErrorCode.None)
+        {
+            return new(validation);
+        }
+
+        TenantScope scope = new(request.GameId, request.EnvironmentId);
+        if (!cursors.TryDecode(
+                request.Cursor,
+                scope,
+                request.ProtocolVersion,
+                request.RegionId,
+                request.ExcludeFull,
+                clock.UtcNow,
+                out SessionListingId? after))
+        {
+            return new(RendezvousErrorCode.InvalidRequest);
+        }
+
+        VisibleListingQuery query = new(
+            scope,
+            request.ProtocolVersion,
+            request.RegionId,
+            request.PageSize + 1,
+            after,
+            request.ExcludeFull);
+        StoreResult<IReadOnlyList<StoredListing>> found = store.BrowseVisibleListings(
+            query,
+            cancellationToken);
+        if (!found.Succeeded || found.Value is null)
+        {
+            return new(found.Code == StoreResultCode.ServiceUnavailable
+                ? RendezvousErrorCode.ServiceUnavailable
+                : RendezvousErrorCode.InternalError);
+        }
+
+        List<SessionListing> items = found.Value
+            .Take(request.PageSize)
+            .Select(ToContract)
+            .ToList();
+        bool hasMore = found.Value.Count > request.PageSize;
+        while (items.Count > 0)
+        {
+            string? nextCursor = hasMore
+                ? cursors.Encode(query, items[^1].ListingId, clock.UtcNow)
+                : null;
+            BrowseSessionsResponse response = new() { Items = items, NextCursor = nextCursor };
+            if (JsonSerializer.SerializeToUtf8Bytes(response, ContractJson.Options).Length
+                <= ContractLimits.BrowserResponseMaxBytes)
+            {
+                return new(RendezvousErrorCode.None, response);
+            }
+
+            items.RemoveAt(items.Count - 1);
+            hasMore = true;
+        }
+
+        return new(RendezvousErrorCode.None, new BrowseSessionsResponse());
+    }
+
+    public BrowserServiceResult<GetSessionResponse> Get(
+        SessionListingId listingId,
+        GameId gameId,
+        EnvironmentId environmentId,
+        uint protocolVersion,
+        CancellationToken cancellationToken = default)
+    {
+        if (listingId.Value == Guid.Empty
+            || string.IsNullOrEmpty(gameId.Value)
+            || string.IsNullOrEmpty(environmentId.Value)
+            || protocolVersion == 0)
+        {
+            return new(RendezvousErrorCode.InvalidRequest);
+        }
+
+        StoreResult<StoredListing> found = store.GetListing(listingId, true, cancellationToken);
+        if (!found.Succeeded || found.Value is null)
+        {
+            return new(found.Code == StoreResultCode.ServiceUnavailable
+                ? RendezvousErrorCode.ServiceUnavailable
+                : RendezvousErrorCode.NotFound);
+        }
+
+        StoredListing listing = found.Value;
+        if (listing.Definition.Scope != new TenantScope(gameId, environmentId)
+            || listing.Definition.ProtocolVersion != protocolVersion)
+        {
+            return new(RendezvousErrorCode.NotFound);
+        }
+
+        return new(RendezvousErrorCode.None, new GetSessionResponse
+        {
+            Session = ToContract(listing),
+        });
+    }
+
+    private static RendezvousErrorCode Validate(BrowseSessionsRequest request)
+    {
+        RendezvousErrorCode version = ContractValidation.ValidateContractVersion(request.ContractVersion);
+        if (version != RendezvousErrorCode.None)
+        {
+            return version;
+        }
+
+        return string.IsNullOrEmpty(request.GameId.Value)
+            || string.IsNullOrEmpty(request.EnvironmentId.Value)
+            || request.ProtocolVersion == 0
+            || (request.RegionId.HasValue && string.IsNullOrEmpty(request.RegionId.Value.Value))
+            || !ContractValidation.IsPageSizeValid(request.PageSize)
+            || !ContractValidation.IsCursorValid(request.Cursor)
+            ? RendezvousErrorCode.InvalidRequest
+            : RendezvousErrorCode.None;
+    }
+
+    private static SessionListing ToContract(StoredListing stored) => new()
+    {
+        ListingId = stored.Definition.ListingId,
+        GameId = stored.Definition.Scope.GameId,
+        EnvironmentId = stored.Definition.Scope.EnvironmentId,
+        RegionId = stored.Definition.RegionId,
+        ProtocolVersion = stored.Definition.ProtocolVersion,
+        BuildVersion = stored.Definition.BuildVersion,
+        DisplayName = stored.Definition.DisplayName,
+        Visibility = stored.Definition.Visibility,
+        PublisherTrustMode = stored.Definition.TrustMode,
+        Capacity = new()
+        {
+            CurrentPlayers = stored.Definition.CurrentPlayers,
+            MaximumPlayers = stored.Definition.MaximumPlayers,
+        },
+        Metadata = stored.Definition.Metadata.ToDictionary(
+            static item => item.Key,
+            static item => item.Value,
+            StringComparer.Ordinal),
+    };
+}

src/FinalFactory.Rendezvous.Server/Http/ContractEndpoints.cs

@@ -1,4 +1,5 @@
 using FinalFactory.Rendezvous.Contracts;
+using FinalFactory.Rendezvous.Server.Browser;
 using FinalFactory.Rendezvous.Server.Provisioning;
 using FinalFactory.Rendezvous.Server.Sessions;
 using FinalFactory.Rendezvous.Server.State;
@@ -55,11 +56,14 @@ internal static class ContractEndpoints
             .WithName("DeleteSession");
         sessions.MapGet("/", BrowseSessions)
             .Produces<BrowseSessionsResponse>()
-            .Produces<ApiError>(NotImplementedStatus)
+            .Produces<ApiError>(StatusCodes.Status400BadRequest)
+            .Produces<ApiError>(StatusCodes.Status503ServiceUnavailable)
             .WithName("BrowseSessions");
         sessions.MapGet("/{listingId}", GetSession)
             .Produces<GetSessionResponse>()
-            .Produces<ApiError>(NotImplementedStatus)
+            .Produces<ApiError>(StatusCodes.Status400BadRequest)
+            .Produces<ApiError>(StatusCodes.Status404NotFound)
+            .Produces<ApiError>(StatusCodes.Status503ServiceUnavailable)
             .WithName("GetSession");
         sessions.MapGet("/{listingId}/join-attempts", BrowseHostJoinAttempts)
             .Produces<BrowseHostJoinAttemptsResponse>()
@@ -200,9 +204,64 @@ internal static class ContractEndpoints
         [FromQuery] uint protocolVersion,
         [FromQuery] string? regionId,
         [FromQuery] int? pageSize,
-        [FromQuery] string? cursor) => NotImplemented();
+        [FromQuery] bool? excludeFull,
+        [FromQuery] string? cursor,
+        [FromServices] SessionBrowserService browser,
+        CancellationToken cancellationToken)
+    {
+        if (!GameId.TryParse(gameId, out GameId parsedGameId)
+            || !EnvironmentId.TryParse(environmentId, out EnvironmentId parsedEnvironmentId)
+            || (regionId is not null && !RegionId.TryParse(regionId, out _)))
+        {
+            return Error(RendezvousErrorCode.InvalidRequest);
+        }
 
-    private static IResult GetSession(SessionListingId listingId) => NotImplemented();
+        BrowserServiceResult<BrowseSessionsResponse> result = browser.Browse(new()
+        {
+            ContractVersion = contractVersion,
+            GameId = parsedGameId,
+            EnvironmentId = parsedEnvironmentId,
+            ProtocolVersion = protocolVersion,
+            RegionId = regionId is null ? null : new RegionId(regionId),
+            PageSize = pageSize ?? ContractLimits.BrowserPageMaxItems,
+            ExcludeFull = excludeFull ?? false,
+            Cursor = cursor,
+        }, cancellationToken);
+        return result.Succeeded && result.Value is not null
+            ? Results.Ok(result.Value)
+            : Error(result.Error);
+    }
+
+    private static IResult GetSession(
+        SessionListingId listingId,
+        [FromQuery] int contractVersion,
+        [FromQuery] string gameId,
+        [FromQuery] string environmentId,
+        [FromQuery] uint protocolVersion,
+        [FromServices] SessionBrowserService browser,
+        CancellationToken cancellationToken)
+    {
+        if (ContractValidation.ValidateContractVersion(contractVersion) != RendezvousErrorCode.None)
+        {
+            return Error(RendezvousErrorCode.UnsupportedContractVersion);
+        }
+
+        if (!GameId.TryParse(gameId, out GameId parsedGameId)
+            || !EnvironmentId.TryParse(environmentId, out EnvironmentId parsedEnvironmentId))
+        {
+            return Error(RendezvousErrorCode.InvalidRequest);
+        }
+
+        BrowserServiceResult<GetSessionResponse> result = browser.Get(
+            listingId,
+            parsedGameId,
+            parsedEnvironmentId,
+            protocolVersion,
+            cancellationToken);
+        return result.Succeeded && result.Value is not null
+            ? Results.Ok(result.Value)
+            : Error(result.Error);
+    }
 
     private static IResult BrowseHostJoinAttempts(
         SessionListingId listingId,

src/FinalFactory.Rendezvous.Server/Program.cs

@@ -1,5 +1,6 @@
 using System.Net;
 using FinalFactory.Rendezvous.Contracts;
+using FinalFactory.Rendezvous.Server.Browser;
 using FinalFactory.Rendezvous.Server.Http;
 using FinalFactory.Rendezvous.Server.Provisioning;
 using FinalFactory.Rendezvous.Server.Sessions;
@@ -119,6 +120,8 @@ else
     builder.Services.AddSingleton<ISessionCapabilityService>(sessionCapabilities);
     builder.Services.AddSingleton(SessionLeaseTiming.From(stateOptions));
     builder.Services.AddSingleton<SessionLeaseService>();
+    builder.Services.AddSingleton<SessionBrowserCursorCodec>();
+    builder.Services.AddSingleton<SessionBrowserService>();
     builder.Services.AddSingleton(new ProvisioningReadiness(true));
 }
 

src/FinalFactory.Rendezvous.Server/State/EphemeralStateContracts.cs

@@ -223,7 +223,9 @@ internal sealed record VisibleListingQuery(
     TenantScope Scope,
     uint ProtocolVersion,
     RegionId? RegionId,
-    int MaximumResults = ContractLimits.BrowserPageMaxItems);
+    int MaximumResults = ContractLimits.BrowserPageMaxItems,
+    SessionListingId? AfterListingId = null,
+    bool ExcludeFull = false);
 
 internal enum AttemptPeerRole
 {

src/FinalFactory.Rendezvous.Server/State/InMemoryEphemeralRendezvousStore.cs

@@ -301,7 +301,7 @@ internal sealed class InMemoryEphemeralRendezvousStore : IEphemeralRendezvousSto
             || query.ProtocolVersion == 0
             || (query.RegionId.HasValue && string.IsNullOrEmpty(query.RegionId.Value.Value))
             || query.MaximumResults <= 0
-            || query.MaximumResults > ContractLimits.BrowserPageMaxItems)
+            || query.MaximumResults > ContractLimits.BrowserPageMaxItems + 1)
         {
             throw new ArgumentOutOfRangeException(nameof(query));
         }
@@ -311,6 +311,10 @@ internal sealed class InMemoryEphemeralRendezvousStore : IEphemeralRendezvousSto
                 && entry.Definition.ProtocolVersion == query.ProtocolVersion
                 && entry.Definition.Visibility == ListingVisibility.Public
                 && (!query.RegionId.HasValue || entry.Definition.RegionId == query.RegionId.Value)
+                && (!query.AfterListingId.HasValue
+                    || entry.Definition.ListingId.Value.CompareTo(query.AfterListingId.Value.Value) > 0)
+                && (!query.ExcludeFull
+                    || entry.Definition.CurrentPlayers < entry.Definition.MaximumPlayers)
                 && _presence.ContainsKey(entry.Definition.HostPresenceHandle))
             .OrderBy(static entry => entry.Definition.ListingId.Value)
             .Take(query.MaximumResults)

tests/FinalFactory.Rendezvous.Tests/Browser/SessionBrowserServiceTests.cs

@@ -0,0 +1,153 @@
+using System.Text.Json;
+using FinalFactory.Rendezvous.Contracts;
+using FinalFactory.Rendezvous.Server.Browser;
+using FinalFactory.Rendezvous.Server.State;
+
+namespace FinalFactory.Rendezvous.Tests.Browser;
+
+public sealed class SessionBrowserServiceTests
+{
+    [Fact]
+    public void ListEnforcesTenantProtocolPresenceVisibilityAndAvailabilityFilters()
+    {
+        using SessionBrowserFixture fixture = new();
+        StoredListing eligible = fixture.Add();
+        fixture.Add(scope: new(new("other-game"), fixture.Scope.EnvironmentId));
+        fixture.Add(scope: new(fixture.Scope.GameId, new("other-env")));
+        fixture.Add(protocolVersion: 8);
+        fixture.Add(regionId: new("us-east"));
+        fixture.Add(visibility: ListingVisibility.Unlisted);
+        fixture.Add(fresh: false);
+        fixture.Add(currentPlayers: 8, maximumPlayers: 8);
+        BrowseSessionsRequest request = fixture.Request();
+        request.ExcludeFull = true;
+
+        BrowserServiceResult<BrowseSessionsResponse> result = fixture.Browser.Browse(request);
+
+        Assert.True(result.Succeeded);
+        Assert.Collection(result.Value!.Items, item => Assert.Equal(eligible.Definition.ListingId, item.ListingId));
+    }
+
+    [Fact]
+    public void UnguessableIdRetrievalAllowsFreshUnlistedOnlyWithinExactScope()
+    {
+        using SessionBrowserFixture fixture = new();
+        StoredListing unlisted = fixture.Add(visibility: ListingVisibility.Unlisted);
+
+        Assert.True(fixture.Browser.Get(
+            unlisted.Definition.ListingId,
+            fixture.Scope.GameId,
+            fixture.Scope.EnvironmentId,
+            7).Succeeded);
+        Assert.Equal(RendezvousErrorCode.NotFound, fixture.Browser.Get(
+            unlisted.Definition.ListingId,
+            new("other-game"),
+            fixture.Scope.EnvironmentId,
+            7).Error);
+        Assert.Equal(RendezvousErrorCode.NotFound, fixture.Browser.Get(
+            unlisted.Definition.ListingId,
+            fixture.Scope.GameId,
+            fixture.Scope.EnvironmentId,
+            8).Error);
+        fixture.Clock.Advance(TimeSpan.FromSeconds(20));
+        Assert.Equal(RendezvousErrorCode.NotFound, fixture.Browser.Get(
+            unlisted.Definition.ListingId,
+            fixture.Scope.GameId,
+            fixture.Scope.EnvironmentId,
+            7).Error);
+    }
+
+    [Fact]
+    public void KeysetCursorReturnsStableRecordsOnceAndRejectsTamperingOrRescoping()
+    {
+        using SessionBrowserFixture fixture = new();
+        for (int index = 0; index < 7; index++)
+        {
+            fixture.Add();
+        }
+
+        BrowseSessionsRequest request = fixture.Request(pageSize: 2);
+        List<SessionListingId> seen = [];
+        do
+        {
+            BrowseSessionsResponse page = fixture.Browser.Browse(request).Value!;
+            seen.AddRange(page.Items.Select(static item => item.ListingId));
+            request.Cursor = page.NextCursor;
+        }
+        while (request.Cursor is not null);
+
+        Assert.Equal(7, seen.Count);
+        Assert.Equal(7, seen.Distinct().Count());
+        Assert.Equal(seen.OrderBy(static id => id.Value), seen);
+
+        BrowseSessionsRequest tampered = fixture.Request(pageSize: 2);
+        tampered.Cursor = fixture.Browser.Browse(tampered).Value!.NextCursor + "A";
+        Assert.Equal(RendezvousErrorCode.InvalidRequest, fixture.Browser.Browse(tampered).Error);
+        BrowseSessionsRequest rescoped = fixture.Request(pageSize: 2);
+        rescoped.Cursor = fixture.Browser.Browse(fixture.Request(pageSize: 2)).Value!.NextCursor;
+        rescoped.ExcludeFull = true;
+        Assert.Equal(RendezvousErrorCode.InvalidRequest, fixture.Browser.Browse(rescoped).Error);
+
+        BrowseSessionsRequest expired = fixture.Request(pageSize: 2);
+        expired.Cursor = fixture.Browser.Browse(expired).Value!.NextCursor;
+        fixture.Clock.Advance(TimeSpan.FromMinutes(5));
+        Assert.Equal(RendezvousErrorCode.InvalidRequest, fixture.Browser.Browse(expired).Error);
+    }
+
+    [Fact]
+    public void ResponseByteBudgetTrimsLargePagesAndContinuesWithCursor()
+    {
+        using SessionBrowserFixture fixture = new();
+        Dictionary<string, string> metadata = Enumerable.Range(0, 14).ToDictionary(
+            static index => $"key-{index}",
+            static index => new string((char)('a' + index % 26), 256),
+            EqualityComparer<string>.Default);
+        for (int index = 0; index < 100; index++)
+        {
+            fixture.Add(metadata: metadata);
+        }
+
+        BrowseSessionsResponse response = fixture.Browser.Browse(fixture.Request()).Value!;
+        int encodedBytes = JsonSerializer.SerializeToUtf8Bytes(response, ContractJson.Options).Length;
+
+        Assert.InRange(encodedBytes, 1, ContractLimits.BrowserResponseMaxBytes);
+        Assert.NotEmpty(response.Items);
+        Assert.NotNull(response.NextCursor);
+        Assert.True(response.Items.Count < 100);
+    }
+
+    [Fact]
+    public void PresentationMetadataIsJsonEscapedAndResponseHasNoConnectionSecrets()
+    {
+        using SessionBrowserFixture fixture = new();
+        fixture.Add(metadata: new Dictionary<string, string>(StringComparer.Ordinal)
+        {
+            ["mode"] = "co-op",
+            ["map"] = "<script>alert(1)</script>",
+        });
+
+        BrowseSessionsResponse response = fixture.Browser.Browse(fixture.Request()).Value!;
+        string json = JsonSerializer.Serialize(response, ContractJson.Options);
+
+        Assert.DoesNotContain("<script>", json, StringComparison.OrdinalIgnoreCase);
+        Assert.DoesNotContain("endpoint", json, StringComparison.OrdinalIgnoreCase);
+        Assert.DoesNotContain("token", json, StringComparison.OrdinalIgnoreCase);
+        Assert.DoesNotContain("capability", json, StringComparison.OrdinalIgnoreCase);
+        Assert.Equal("<script>alert(1)</script>", Assert.Single(response.Items).Metadata["map"]);
+    }
+
+    [Fact]
+    public void RevokedListingDisappearsBeforeAnotherReadPathCanObserveIt()
+    {
+        using SessionBrowserFixture fixture = new();
+        StoredListing listing = fixture.Add();
+        fixture.Store.RevokeListing(listing.Definition.ListingId);
+
+        Assert.Empty(fixture.Browser.Browse(fixture.Request()).Value!.Items);
+        Assert.Equal(RendezvousErrorCode.NotFound, fixture.Browser.Get(
+            listing.Definition.ListingId,
+            fixture.Scope.GameId,
+            fixture.Scope.EnvironmentId,
+            7).Error);
+    }
+}

tests/FinalFactory.Rendezvous.Tests/Browser/SessionBrowserTestData.cs

@@ -0,0 +1,71 @@
+using FinalFactory.Rendezvous.Contracts;
+using FinalFactory.Rendezvous.Server.Browser;
+using FinalFactory.Rendezvous.Server.State;
+using FinalFactory.Rendezvous.Tests.State;
+
+namespace FinalFactory.Rendezvous.Tests.Browser;
+
+internal sealed class SessionBrowserFixture : IDisposable
+{
+    private readonly EphemeralStateFixture _state = new();
+
+    public SessionBrowserFixture()
+    {
+        Cursors = new();
+        Browser = new(_state.Store, Cursors, _state.Clock);
+    }
+
+    public InMemoryEphemeralRendezvousStore Store => _state.Store;
+    public ManualRendezvousClock Clock => _state.Clock;
+    public SessionBrowserCursorCodec Cursors { get; }
+    public SessionBrowserService Browser { get; }
+    public TenantScope Scope => _state.Scope;
+
+    public StoredListing Add(
+        TenantScope? scope = null,
+        uint protocolVersion = 7,
+        RegionId? regionId = null,
+        ListingVisibility visibility = ListingVisibility.Public,
+        bool fresh = true,
+        int currentPlayers = 1,
+        int maximumPlayers = 8,
+        IReadOnlyDictionary<string, string>? metadata = null)
+    {
+        CreateListingCommand seed = _state.ListingCommand();
+        CreateListingCommand command = seed with
+        {
+            Listing = seed.Listing with
+            {
+                Scope = scope ?? Scope,
+                ProtocolVersion = protocolVersion,
+                RegionId = regionId ?? seed.Listing.RegionId,
+                Visibility = visibility,
+                CurrentPlayers = currentPlayers,
+                MaximumPlayers = maximumPlayers,
+                Metadata = metadata ?? seed.Listing.Metadata,
+            },
+        };
+        StoredListing listing = Store.CreateListing(command).Value!;
+        if (fresh)
+        {
+            listing = Store.BindHostPresence(new(
+                command.Listing.HostPresenceHandle,
+                command.Listing.HostPresenceFingerprint,
+                EphemeralStateFixture.PublicEndpoint(40_000),
+                null)).Value!;
+        }
+
+        return listing;
+    }
+
+    public BrowseSessionsRequest Request(int pageSize = 100) => new()
+    {
+        GameId = Scope.GameId,
+        EnvironmentId = Scope.EnvironmentId,
+        ProtocolVersion = 7,
+        RegionId = new("eu-central"),
+        PageSize = pageSize,
+    };
+
+    public void Dispose() => Cursors.Dispose();
+}

tests/FinalFactory.Rendezvous.Tests/Client/RendezvousClientBehaviorTests.cs

@@ -0,0 +1,342 @@
+using System.Net;
+using System.Text;
+using System.Text.Json;
+using FinalFactory.Rendezvous.Client;
+using FinalFactory.Rendezvous.Contracts;
+
+namespace FinalFactory.Rendezvous.Tests.Client;
+
+public sealed class RendezvousClientBehaviorTests
+{
+    [Fact]
+    public async Task RegistrationRetriesWithTheSameIdempotentPayloadAndDisposesResponses()
+    {
+        TrackingContent unavailable = JsonContent(new ApiError
+        {
+            Code = RendezvousErrorCode.ServiceUnavailable,
+            Message = "try later",
+            RetryAfterSeconds = 1,
+        });
+        TrackingContent created = JsonContent(CreateRegistrationResponse());
+        ScriptedHandler handler = new(
+            Response(HttpStatusCode.ServiceUnavailable, unavailable),
+            Response(HttpStatusCode.Created, created),
+            new HttpResponseMessage(HttpStatusCode.NoContent));
+        using HttpClient httpClient = new(handler) { BaseAddress = new("http://rendezvous.test/") };
+        RegisterSessionRequest request = CreateRegistrationRequest("stable-idempotency-key");
+        RecordingDelay delay = new(() => request.DisplayName = "mutated during retry delay");
+        RendezvousPublisherClient publisher = new(
+            httpClient,
+            new RendezvousClientOptions { JitterRatio = 0 },
+            delay);
+
+        RendezvousClientResult<PublishedSession> result = await publisher.RegisterAsync(
+            request,
+            "publisher-credential");
+
+        Assert.True(result.IsSuccess);
+        Assert.Equal(2, handler.RequestBodies.Count);
+        Assert.Equal(handler.RequestBodies[0], handler.RequestBodies[1]);
+        Assert.Contains("stable-idempotency-key", handler.RequestBodies[0], StringComparison.Ordinal);
+        Assert.Equal(TimeSpan.FromSeconds(1), Assert.Single(delay.Delays));
+        Assert.True(unavailable.IsDisposed);
+        Assert.True(created.IsDisposed);
+
+        using HttpResponseMessage stillOwnedByCaller = await httpClient.GetAsync("health");
+        Assert.Equal(HttpStatusCode.NoContent, stillOwnedByCaller.StatusCode);
+    }
+
+    [Fact]
+    public async Task UpdateUsesTheLeaseWithoutMutatingTheCallersRequest()
+    {
+        ScriptedHandler handler = new(
+            Response(HttpStatusCode.Created, JsonContent(CreateRegistrationResponse())),
+            new HttpResponseMessage(HttpStatusCode.NoContent));
+        using HttpClient httpClient = new(handler) { BaseAddress = new("http://rendezvous.test/") };
+        RendezvousPublisherClient publisher = new(httpClient);
+        PublishedSession session = AssertSuccess(await publisher.RegisterAsync(
+            CreateRegistrationRequest("update-idempotency-key"),
+            "publisher-credential"));
+        UpdateSessionRequest update = new()
+        {
+            LeaseToken = "caller-placeholder",
+            BuildVersion = "2.0.0",
+            DisplayName = "updated",
+            Capacity = new() { CurrentPlayers = 2, MaximumPlayers = 4 },
+            Metadata = new() { ["mode"] = "online-coop" },
+        };
+
+        RendezvousClientResult<bool> result = await publisher.UpdateAsync(
+            session,
+            update,
+            "publisher-credential");
+
+        Assert.True(result.IsSuccess);
+        Assert.Equal("caller-placeholder", update.LeaseToken);
+        Assert.Contains("lease-token", handler.RequestBodies[1], StringComparison.Ordinal);
+        Assert.DoesNotContain("caller-placeholder", handler.RequestBodies[1], StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task GatewayFailureIsRetriedForSafeBrowserReads()
+    {
+        ScriptedHandler handler = new(
+            new HttpResponseMessage(HttpStatusCode.BadGateway),
+            Response(HttpStatusCode.OK, JsonContent(new BrowseSessionsResponse())));
+        using HttpClient httpClient = new(handler) { BaseAddress = new("http://rendezvous.test/") };
+        RecordingDelay delay = new();
+        RendezvousSessionBrowserClient browser = new(
+            httpClient,
+            new RendezvousClientOptions { JitterRatio = 0 },
+            delay);
+
+        RendezvousClientResult<BrowseSessionsResponse> result = await browser.BrowseAsync(new()
+        {
+            GameId = new("space-game"),
+            EnvironmentId = new("production"),
+            ProtocolVersion = 7,
+        });
+
+        Assert.True(result.IsSuccess, result.Message);
+        Assert.Equal(2, handler.RequestUris.Count);
+        Assert.Equal(TimeSpan.FromMilliseconds(200), Assert.Single(delay.Delays));
+    }
+
+    [Fact]
+    public void SuccessResultRequiresAValue()
+    {
+        Assert.Throws<ArgumentNullException>(() => RendezvousClientResult.Success<string>(null!));
+    }
+
+    [Fact]
+    public async Task BrowseAllFollowsCursorsWithoutMutatingTheCallersRequest()
+    {
+        ScriptedHandler handler = new(
+            Response(HttpStatusCode.OK, JsonContent(new BrowseSessionsResponse
+            {
+                Items = [CreateListing("00000000-0000-0000-0000-000000000001")],
+                NextCursor = "next page+token",
+            })),
+            Response(HttpStatusCode.OK, JsonContent(new BrowseSessionsResponse
+            {
+                Items = [CreateListing("00000000-0000-0000-0000-000000000002")],
+            })));
+        using HttpClient httpClient = new(handler) { BaseAddress = new("http://rendezvous.test/") };
+        RendezvousSessionBrowserClient browser = new(httpClient);
+        BrowseSessionsRequest request = new()
+        {
+            GameId = new("space-game"),
+            EnvironmentId = new("production"),
+            ProtocolVersion = 7,
+            PageSize = 1,
+        };
+
+        RendezvousClientResult<IReadOnlyList<SessionListing>> result = await browser.BrowseAllAsync(request);
+
+        Assert.True(result.IsSuccess);
+        Assert.Equal(2, result.Value!.Count);
+        Assert.Null(request.Cursor);
+        Assert.DoesNotContain("cursor=", handler.RequestUris[0].Query, StringComparison.Ordinal);
+        Assert.Contains("cursor=next%20page%2Btoken", handler.RequestUris[1].Query, StringComparison.Ordinal);
+        Assert.Contains("gameId=space-game", handler.RequestUris[0].Query, StringComparison.Ordinal);
+    }
+
+    [Fact]
+    public async Task LeaseMaintainerReportsLeaseLoss()
+    {
+        ScriptedHandler handler = new(
+            Response(HttpStatusCode.Created, JsonContent(CreateRegistrationResponse())),
+            Response(HttpStatusCode.Gone, JsonContent(new ApiError
+            {
+                Code = RendezvousErrorCode.Expired,
+                Message = "lease expired",
+            })));
+        using HttpClient httpClient = new(handler) { BaseAddress = new("http://rendezvous.test/") };
+        RecordingDelay delay = new();
+        RendezvousPublisherClient publisher = new(httpClient, delay: delay);
+        PublishedSession session = AssertSuccess(await publisher.RegisterAsync(
+            CreateRegistrationRequest("lease-loss-key"),
+            "publisher-credential"));
+        await using SessionLeaseMaintainer maintainer = publisher.CreateLeaseMaintainer(
+            session,
+            "publisher-credential");
+        bool eventRaised = false;
+        maintainer.LeaseLost += (_, _) => eventRaised = true;
+
+        LeaseMaintenanceResult result = await maintainer.RunAsync();
+
+        Assert.Equal(LeaseMaintenanceStopReason.LeaseLost, result.Reason);
+        Assert.Equal(RendezvousErrorCode.Expired, result.Error);
+        Assert.True(eventRaised);
+        Assert.Equal(TimeSpan.FromSeconds(15), Assert.Single(delay.Delays));
+    }
+
+    [Fact]
+    public async Task DisposingLeaseMaintainerCancelsItsWaitAndDoesNotRenew()
+    {
+        ScriptedHandler handler = new(
+            Response(HttpStatusCode.Created, JsonContent(CreateRegistrationResponse())));
+        using HttpClient httpClient = new(handler) { BaseAddress = new("http://rendezvous.test/") };
+        BlockingDelay delay = new();
+        RendezvousPublisherClient publisher = new(httpClient, delay: delay);
+        PublishedSession session = AssertSuccess(await publisher.RegisterAsync(
+            CreateRegistrationRequest("dispose-key"),
+            "publisher-credential"));
+        SessionLeaseMaintainer maintainer = publisher.CreateLeaseMaintainer(
+            session,
+            "publisher-credential");
+        Task<LeaseMaintenanceResult> active = maintainer.RunAsync();
+        await delay.Started.Task.WaitAsync(TimeSpan.FromSeconds(2));
+
+        await maintainer.DisposeAsync();
+        LeaseMaintenanceResult result = await active;
+
+        Assert.Equal(LeaseMaintenanceStopReason.Disposed, result.Reason);
+        Assert.Single(handler.RequestUris);
+        await Assert.ThrowsAsync<ObjectDisposedException>(() => maintainer.RunAsync());
+    }
+
+    [Fact]
+    public async Task CallerCancellationStopsLeaseMaintenanceWithoutRenewing()
+    {
+        ScriptedHandler handler = new(
+            Response(HttpStatusCode.Created, JsonContent(CreateRegistrationResponse())));
+        using HttpClient httpClient = new(handler) { BaseAddress = new("http://rendezvous.test/") };
+        BlockingDelay delay = new();
+        RendezvousPublisherClient publisher = new(httpClient, delay: delay);
+        PublishedSession session = AssertSuccess(await publisher.RegisterAsync(
+            CreateRegistrationRequest("cancel-key"),
+            "publisher-credential"));
+        await using SessionLeaseMaintainer maintainer = publisher.CreateLeaseMaintainer(
+            session,
+            "publisher-credential");
+        using CancellationTokenSource cancellation = new();
+        Task<LeaseMaintenanceResult> active = maintainer.RunAsync(cancellation.Token);
+        await delay.Started.Task.WaitAsync(TimeSpan.FromSeconds(2));
+
+        await cancellation.CancelAsync();
+        LeaseMaintenanceResult result = await active;
+
+        Assert.Equal(LeaseMaintenanceStopReason.Cancelled, result.Reason);
+        Assert.Single(handler.RequestUris);
+    }
+
+    private static T AssertSuccess<T>(RendezvousClientResult<T> result)
+    {
+        Assert.True(result.IsSuccess, result.Message);
+        return Assert.IsType<T>(result.Value);
+    }
+
+    private static RegisterSessionRequest CreateRegistrationRequest(string idempotencyKey) => new()
+    {
+        IdempotencyKey = idempotencyKey,
+        GameId = new("space-game"),
+        EnvironmentId = new("production"),
+        RegionId = new("eu-central"),
+        ProtocolVersion = 7,
+        BuildVersion = "1.0.0",
+        DisplayName = "SDK host",
+        Visibility = ListingVisibility.Public,
+        Capacity = new() { CurrentPlayers = 1, MaximumPlayers = 4 },
+    };
+
+    private static RegisterSessionResponse CreateRegistrationResponse() => new()
+    {
+        ListingId = new(Guid.Parse("00000000-0000-0000-0000-000000000010")),
+        LeaseId = new(Guid.Parse("00000000-0000-0000-0000-000000000011")),
+        LeaseToken = "lease-token",
+        HostPresenceHandle = new(Guid.Parse("00000000-0000-0000-0000-000000000012")),
+        HostPresenceCapability = "presence-capability",
+        ExpiresAt = new DateTimeOffset(2030, 1, 1, 0, 0, 0, TimeSpan.Zero),
+        LeaseRenewAfterSeconds = 15,
+        HostPresenceRefreshAfterSeconds = 10,
+    };
+
+    private static SessionListing CreateListing(string id) => new()
+    {
+        ListingId = new(Guid.Parse(id)),
+        GameId = new("space-game"),
+        EnvironmentId = new("production"),
+        RegionId = new("eu-central"),
+        ProtocolVersion = 7,
+        BuildVersion = "1.0.0",
+        DisplayName = "host",
+        Visibility = ListingVisibility.Public,
+        PublisherTrustMode = PublisherTrustMode.ManagedDedicated,
+        Capacity = new() { CurrentPlayers = 1, MaximumPlayers = 4 },
+    };
+
+    private static TrackingContent JsonContent<T>(T value) => new(
+        JsonSerializer.SerializeToUtf8Bytes(value, ContractJson.Options));
+
+    private static HttpResponseMessage Response(HttpStatusCode status, HttpContent content) => new(status)
+    {
+        Content = content,
+    };
+
+    private sealed class ScriptedHandler(params HttpResponseMessage[] responses) : HttpMessageHandler
+    {
+        private readonly Queue<HttpResponseMessage> _responses = new(responses);
+
+        internal List<string> RequestBodies { get; } = [];
+        internal List<Uri> RequestUris { get; } = [];
+
+        protected override async Task<HttpResponseMessage> SendAsync(
+            HttpRequestMessage request,
+            CancellationToken cancellationToken)
+        {
+            RequestUris.Add(request.RequestUri!);
+            RequestBodies.Add(request.Content is null
+                ? string.Empty
+                : await request.Content.ReadAsStringAsync(cancellationToken));
+            return _responses.Count > 0
+                ? _responses.Dequeue()
+                : throw new InvalidOperationException("No scripted response remains.");
+        }
+    }
+
+    private sealed class TrackingContent(byte[] bytes) : HttpContent
+    {
+        internal bool IsDisposed { get; private set; }
+
+        protected override Task SerializeToStreamAsync(Stream stream, TransportContext? context) =>
+            stream.WriteAsync(bytes).AsTask();
+
+        protected override bool TryComputeLength(out long length)
+        {
+            length = bytes.Length;
+            return true;
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            IsDisposed = true;
+            base.Dispose(disposing);
+        }
+    }
+
+    private sealed class RecordingDelay(Action? onDelay = null) : IRendezvousDelay
+    {
+        internal List<TimeSpan> Delays { get; } = [];
+
+        public Task DelayAsync(TimeSpan delay, CancellationToken cancellationToken)
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            Delays.Add(delay);
+            onDelay?.Invoke();
+            return Task.CompletedTask;
+        }
+    }
+
+    private sealed class BlockingDelay : IRendezvousDelay
+    {
+        internal TaskCompletionSource Started { get; } = new(
+            TaskCreationOptions.RunContinuationsAsynchronously);
+
+        public Task DelayAsync(TimeSpan delay, CancellationToken cancellationToken)
+        {
+            Started.TrySetResult();
+            return Task.Delay(Timeout.InfiniteTimeSpan, cancellationToken);
+        }
+    }
+}

tests/FinalFactory.Rendezvous.Tests/Client/RendezvousClientIntegrationTests.cs

@@ -0,0 +1,195 @@
+using FinalFactory.Rendezvous.Client;
+using FinalFactory.Rendezvous.Contracts;
+using FinalFactory.Rendezvous.Server.Browser;
+using FinalFactory.Rendezvous.Server.Http;
+using FinalFactory.Rendezvous.Server.Provisioning;
+using FinalFactory.Rendezvous.Server.Sessions;
+using FinalFactory.Rendezvous.Server.State;
+using FinalFactory.Rendezvous.Tests.Provisioning;
+using FinalFactory.Rendezvous.Tests.State;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Hosting.Server;
+using Microsoft.AspNetCore.Hosting.Server.Features;
+using Microsoft.AspNetCore.Routing;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace FinalFactory.Rendezvous.Tests.Client;
+
+public sealed class RendezvousClientIntegrationTests
+{
+    [Fact]
+    public async Task PublisherAndBrowserClientsCompleteTheRealSessionLifecycleAndPaging()
+    {
+        await using ClientTestHost host = await ClientTestHost.StartAsync();
+        RendezvousPublisherClient publisher = new(host.HttpClient);
+        RendezvousSessionBrowserClient browser = new(host.HttpClient);
+        List<PublishedSession> sessions = [];
+
+        for (int index = 0; index < 3; index++)
+        {
+            RendezvousClientResult<PublishedSession> registered = await publisher.RegisterAsync(
+                CreateRegistration(index),
+                host.PublisherCredential);
+            PublishedSession session = AssertSuccess(registered);
+            sessions.Add(session);
+            Assert.True(host.Capabilities.TryFingerprint(
+                session.HostPresenceCapability,
+                out SecretFingerprint fingerprint));
+            StoreResult<StoredListing> bound = host.Store.BindHostPresence(new(
+                session.HostPresenceHandle,
+                fingerprint,
+                new(AddressFamilyKind.Ipv4, $"203.0.113.{80 + index}", 41_000 + index),
+                null));
+            Assert.Equal(StoreResultCode.Success, bound.Code);
+        }
+
+        PublishedSession first = sessions[0];
+        RendezvousClientResult<RenewLeaseResponse> renewed = await publisher.RenewAsync(
+            first,
+            host.PublisherCredential);
+        Assert.True(renewed.IsSuccess, renewed.Message);
+        Assert.Equal(renewed.Value!.ExpiresAt, first.ExpiresAt);
+
+        UpdateSessionRequest update = new()
+        {
+            BuildVersion = "2.0.0",
+            DisplayName = "SDK host updated",
+            Capacity = new() { CurrentPlayers = 2, MaximumPlayers = 8 },
+            Metadata = new() { ["mode"] = "online-coop" },
+        };
+        RendezvousClientResult<bool> updated = await publisher.UpdateAsync(
+            first,
+            update,
+            host.PublisherCredential);
+        Assert.True(updated.IsSuccess, updated.Message);
+
+        BrowseSessionsRequest browseRequest = new()
+        {
+            GameId = new("space-game"),
+            EnvironmentId = new("production"),
+            RegionId = new("eu-central"),
+            ProtocolVersion = 7,
+            PageSize = 1,
+            ExcludeFull = true,
+        };
+        IReadOnlyList<SessionListing> listings = AssertSuccess(
+            await browser.BrowseAllAsync(browseRequest));
+        Assert.Equal(3, listings.Count);
+        Assert.Equal("SDK host updated", listings.Single(item => item.ListingId == first.ListingId).DisplayName);
+
+        GetSessionResponse direct = AssertSuccess(await browser.GetAsync(
+            first.ListingId,
+            new("space-game"),
+            new("production"),
+            7));
+        Assert.Equal("2.0.0", direct.Session.BuildVersion);
+
+        foreach (PublishedSession session in sessions)
+        {
+            RendezvousClientResult<bool> deregistered = await publisher.DeregisterAsync(
+                session,
+                host.PublisherCredential);
+            Assert.True(deregistered.IsSuccess, deregistered.Message);
+            Assert.Equal(StoreResultCode.NotFound, host.Store.GetListing(session.ListingId, false).Code);
+        }
+    }
+
+    private static T AssertSuccess<T>(RendezvousClientResult<T> result)
+    {
+        Assert.True(result.IsSuccess, result.Message);
+        return Assert.IsAssignableFrom<T>(result.Value);
+    }
+
+    private static RegisterSessionRequest CreateRegistration(int index) => new()
+    {
+        IdempotencyKey = $"sdk-integration-{index}",
+        GameId = new("space-game"),
+        EnvironmentId = new("production"),
+        RegionId = new("eu-central"),
+        ProtocolVersion = 7,
+        BuildVersion = "1.0.0",
+        DisplayName = $"SDK host {index}",
+        Visibility = ListingVisibility.Public,
+        Capacity = new() { CurrentPlayers = 1, MaximumPlayers = 8 },
+        Metadata = new() { ["mode"] = "online-coop" },
+    };
+
+    private sealed class ClientTestHost : IAsyncDisposable
+    {
+        private readonly WebApplication _application;
+
+        private ClientTestHost(
+            WebApplication application,
+            HttpClient httpClient,
+            InMemoryEphemeralRendezvousStore store,
+            EphemeralCapabilityIssuer capabilities,
+            string publisherCredential)
+        {
+            _application = application;
+            HttpClient = httpClient;
+            Store = store;
+            Capabilities = capabilities;
+            PublisherCredential = publisherCredential;
+        }
+
+        internal HttpClient HttpClient { get; }
+        internal InMemoryEphemeralRendezvousStore Store { get; }
+        internal EphemeralCapabilityIssuer Capabilities { get; }
+        internal string PublisherCredential { get; }
+
+        internal static async Task<ClientTestHost> StartAsync()
+        {
+            ManualRendezvousClock clock = new(ProvisioningTestData.Now);
+            EphemeralStoreOptions stateOptions = new();
+            InMemoryEphemeralRendezvousStore store = new(stateOptions, clock, clock);
+            EphemeralCapabilityIssuer capabilities = new();
+            ProvisioningRuntime provisioning = ProvisioningRuntime.Create(
+                ProvisioningTestData.CreateOptions(),
+                ProvisioningTestData.CreateSecrets("secret-1"),
+                clock.UtcNow);
+            DedicatedPublisherPrincipal principal = ProvisioningTestData.CreateDedicatedPublisher();
+            string credential = provisioning.Credentials.Issue(principal, clock.UtcNow);
+
+            WebApplicationBuilder builder = WebApplication.CreateBuilder();
+            builder.WebHost.UseUrls("http://127.0.0.1:0");
+            builder.Services.ConfigureHttpJsonOptions(static options =>
+                ContractJson.Configure(options.SerializerOptions));
+            builder.Services.Configure<RouteHandlerOptions>(static options =>
+                options.ThrowOnBadRequest = true);
+            builder.Services.AddProblemDetails();
+            builder.Services.AddExceptionHandler<RendezvousExceptionHandler>();
+            builder.Services.AddSingleton(provisioning);
+            builder.Services.AddSingleton(provisioning.Credentials);
+            builder.Services.AddSingleton(provisioning.PublisherAuthorization);
+            builder.Services.AddSingleton<IEphemeralRendezvousStore>(store);
+            builder.Services.AddSingleton<IWallClock>(clock);
+            builder.Services.AddSingleton(capabilities);
+            builder.Services.AddSingleton<ISessionCapabilityService>(capabilities);
+            builder.Services.AddSingleton(SessionLeaseTiming.From(stateOptions));
+            builder.Services.AddSingleton<SessionLeaseService>();
+            builder.Services.AddSingleton<SessionBrowserCursorCodec>();
+            builder.Services.AddSingleton<SessionBrowserService>();
+
+            WebApplication app = builder.Build();
+            app.UseExceptionHandler();
+            app.MapRendezvousContractEndpoints();
+            await app.StartAsync();
+            IServer server = app.Services.GetRequiredService<IServer>();
+            string address = Assert.Single(server.Features.Get<IServerAddressesFeature>()!.Addresses);
+            return new(
+                app,
+                new HttpClient { BaseAddress = new Uri(address) },
+                store,
+                capabilities,
+                credential);
+        }
+
+        public async ValueTask DisposeAsync()
+        {
+            HttpClient.Dispose();
+            await _application.StopAsync();
+            await _application.DisposeAsync();
+        }
+    }
+}

tests/FinalFactory.Rendezvous.Tests/Contracts/PublicApiCompatibilityTests.cs

@@ -1,4 +1,5 @@
 using System.Reflection;
+using FinalFactory.Rendezvous.Client;
 using FinalFactory.Rendezvous.Contracts;
 
 namespace FinalFactory.Rendezvous.Tests.Contracts;
@@ -23,6 +24,24 @@ public sealed class PublicApiCompatibilityTests
         Assert.Equal(expected, snapshot);
     }
 
+    [Fact]
+    public void ClientPublicApiMatchesTheV1Snapshot()
+    {
+        string snapshot = CreateSnapshot(typeof(RendezvousPublisherClient).Assembly);
+        string expected = ContractTestFiles.Read("client-public-api.txt");
+        if (expected == "SNAPSHOT_PENDING"
+            && Environment.GetEnvironmentVariable("RENDEZVOUS_UPDATE_CONTRACT_SNAPSHOT") == "1")
+        {
+            string snapshotPath = Path.Combine(
+                ContractTestFiles.Directory,
+                "client-public-api.txt");
+            File.WriteAllText(snapshotPath, snapshot + Environment.NewLine);
+            expected = snapshot;
+        }
+
+        Assert.Equal(expected, snapshot);
+    }
+
     private static string CreateSnapshot(Assembly assembly)
     {
         List<string> lines = [];
@@ -58,10 +77,16 @@ public sealed class PublicApiCompatibilityTests
             foreach (PropertyInfo property in type.GetProperties(BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static | BindingFlags.DeclaredOnly)
                          .OrderBy(static property => property.Name, StringComparer.Ordinal))
             {
-                string accessors = $"{(property.CanRead ? "get;" : string.Empty)}{(property.CanWrite ? "set;" : string.Empty)}";
+                string accessors = $"{(property.GetMethod?.IsPublic == true ? "get;" : string.Empty)}{(property.SetMethod?.IsPublic == true ? "set;" : string.Empty)}";
                 lines.Add($"  PROP {FormatType(property.PropertyType)} {property.Name} {{{accessors}}}");
             }
 
+            foreach (EventInfo eventInfo in type.GetEvents(BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static | BindingFlags.DeclaredOnly)
+                         .OrderBy(static eventInfo => eventInfo.Name, StringComparer.Ordinal))
+            {
+                lines.Add($"  EVENT {FormatType(eventInfo.EventHandlerType!)} {eventInfo.Name}");
+            }
+
             foreach (MethodInfo method in type.GetMethods(BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static | BindingFlags.DeclaredOnly)
                          .Where(static method => !method.IsSpecialName || method.Name.StartsWith("op_", StringComparison.Ordinal))
                          .OrderBy(static method => method.Name, StringComparer.Ordinal)

tests/FinalFactory.Rendezvous.Tests/Sessions/SessionHttpEndpointTests.cs

@@ -4,6 +4,7 @@ using System.Net.Http.Json;
 using System.Text;
 using System.Text.Json;
 using FinalFactory.Rendezvous.Contracts;
+using FinalFactory.Rendezvous.Server.Browser;
 using FinalFactory.Rendezvous.Server.Http;
 using FinalFactory.Rendezvous.Server.Provisioning;
 using FinalFactory.Rendezvous.Server.Sessions;
@@ -52,6 +53,8 @@ public sealed class SessionHttpEndpointTests
         builder.Services.AddSingleton<ISessionCapabilityService>(capabilities);
         builder.Services.AddSingleton(SessionLeaseTiming.From(stateOptions));
         builder.Services.AddSingleton<SessionLeaseService>();
+        builder.Services.AddSingleton<SessionBrowserCursorCodec>();
+        builder.Services.AddSingleton<SessionBrowserService>();
         await using WebApplication app = builder.Build();
         app.UseExceptionHandler();
         app.MapRendezvousContractEndpoints();
@@ -107,6 +110,23 @@ public sealed class SessionHttpEndpointTests
             ContractJson.Options);
         Assert.NotNull(session);
         Assert.Equal($"/v1/sessions/{session.ListingId}", created.Headers.Location!.OriginalString);
+        Assert.True(capabilities.TryFingerprint(
+            session.HostPresenceCapability,
+            out SecretFingerprint presenceFingerprint));
+        store.BindHostPresence(new(
+            session.HostPresenceHandle,
+            presenceFingerprint,
+            new(AddressFamilyKind.Ipv4, "203.0.113.80", 41_000),
+            null));
+
+        BrowseSessionsResponse? browser = await client.GetFromJsonAsync<BrowseSessionsResponse>(
+            "/v1/sessions?contractVersion=1&gameId=space-game&environmentId=production&protocolVersion=7&regionId=eu-central&pageSize=10&excludeFull=true",
+            ContractJson.Options);
+        Assert.Equal(session.ListingId, Assert.Single(browser!.Items).ListingId);
+        GetSessionResponse? direct = await client.GetFromJsonAsync<GetSessionResponse>(
+            $"/v1/sessions/{session.ListingId}?contractVersion=1&gameId=space-game&environmentId=production&protocolVersion=7",
+            ContractJson.Options);
+        Assert.Equal(session.ListingId, direct!.Session.ListingId);
 
         HttpResponseMessage renewed = await client.PostAsJsonAsync(
             $"/v1/sessions/{session.ListingId}/renew",

tests/FinalFactory.Rendezvous.Tests/TestData/Contracts/v1/client-public-api.txt

@@ -0,0 +1,60 @@
+TYPE FinalFactory.Rendezvous.Client.IRendezvousDelay
+  METHOD System.Threading.Tasks.Task DelayAsync(System.TimeSpan delay, System.Threading.CancellationToken cancellationToken)
+TYPE FinalFactory.Rendezvous.Client.IRendezvousPublisherClient
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<System.Boolean>> DeregisterAsync(FinalFactory.Rendezvous.Client.PublishedSession session, System.String publisherCredential, System.Threading.CancellationToken cancellationToken)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<FinalFactory.Rendezvous.Client.PublishedSession>> RegisterAsync(FinalFactory.Rendezvous.Contracts.RegisterSessionRequest request, System.String publisherCredential, System.Threading.CancellationToken cancellationToken)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<FinalFactory.Rendezvous.Contracts.RenewLeaseResponse>> RenewAsync(FinalFactory.Rendezvous.Client.PublishedSession session, System.String publisherCredential, System.Threading.CancellationToken cancellationToken)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<System.Boolean>> UpdateAsync(FinalFactory.Rendezvous.Client.PublishedSession session, FinalFactory.Rendezvous.Contracts.UpdateSessionRequest request, System.String publisherCredential, System.Threading.CancellationToken cancellationToken)
+TYPE FinalFactory.Rendezvous.Client.IRendezvousSessionBrowserClient
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<System.Collections.Generic.IReadOnlyList<FinalFactory.Rendezvous.Contracts.SessionListing>>> BrowseAllAsync(FinalFactory.Rendezvous.Contracts.BrowseSessionsRequest request, System.Int32 maximumPages, System.Threading.CancellationToken cancellationToken)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<FinalFactory.Rendezvous.Contracts.BrowseSessionsResponse>> BrowseAsync(FinalFactory.Rendezvous.Contracts.BrowseSessionsRequest request, System.Threading.CancellationToken cancellationToken)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<FinalFactory.Rendezvous.Contracts.GetSessionResponse>> GetAsync(FinalFactory.Rendezvous.Contracts.SessionListingId listingId, FinalFactory.Rendezvous.Contracts.GameId gameId, FinalFactory.Rendezvous.Contracts.EnvironmentId environmentId, System.UInt32 protocolVersion, System.Threading.CancellationToken cancellationToken)
+TYPE FinalFactory.Rendezvous.Client.LeaseMaintenanceResult
+  PROP FinalFactory.Rendezvous.Contracts.RendezvousErrorCode Error {get;}
+  PROP FinalFactory.Rendezvous.Client.LeaseMaintenanceStopReason Reason {get;}
+TYPE FinalFactory.Rendezvous.Client.LeaseMaintenanceStopReason
+  ENUM Cancelled=1
+  ENUM Disposed=2
+  ENUM LeaseLost=3
+  ENUM Failed=4
+TYPE FinalFactory.Rendezvous.Client.PublishedSession
+  PROP System.DateTimeOffset ExpiresAt {get;}
+  PROP System.String HostPresenceCapability {get;}
+  PROP FinalFactory.Rendezvous.Contracts.MediationHandle HostPresenceHandle {get;}
+  PROP System.Int32 HostPresenceRefreshAfterSeconds {get;}
+  PROP FinalFactory.Rendezvous.Contracts.LeaseId LeaseId {get;}
+  PROP System.Int32 LeaseRenewAfterSeconds {get;}
+  PROP System.String LeaseToken {get;}
+  PROP FinalFactory.Rendezvous.Contracts.SessionListingId ListingId {get;}
+  METHOD System.String ToString()
+TYPE FinalFactory.Rendezvous.Client.RendezvousClientOptions
+  CTOR ()
+  PROP System.TimeSpan InitialRetryDelay {get;set;}
+  PROP System.Double JitterRatio {get;set;}
+  PROP System.TimeSpan MaximumRetryDelay {get;set;}
+  PROP System.Int32 MaximumSafeRetries {get;set;}
+TYPE FinalFactory.Rendezvous.Client.RendezvousClientResult
+  METHOD FinalFactory.Rendezvous.Client.RendezvousClientResult<T> Failure(FinalFactory.Rendezvous.Contracts.RendezvousErrorCode error, System.String message, System.Nullable<System.Int32> retryAfterSeconds)
+  METHOD FinalFactory.Rendezvous.Client.RendezvousClientResult<T> Success(T value)
+TYPE FinalFactory.Rendezvous.Client.RendezvousClientResult<T>
+  PROP FinalFactory.Rendezvous.Contracts.RendezvousErrorCode Error {get;}
+  PROP System.Boolean IsSuccess {get;}
+  PROP System.String Message {get;}
+  PROP System.Nullable<System.Int32> RetryAfterSeconds {get;}
+  PROP T Value {get;}
+TYPE FinalFactory.Rendezvous.Client.RendezvousPublisherClient
+  CTOR (System.Net.Http.HttpClient httpClient, FinalFactory.Rendezvous.Client.RendezvousClientOptions options, FinalFactory.Rendezvous.Client.IRendezvousDelay delay)
+  METHOD FinalFactory.Rendezvous.Client.SessionLeaseMaintainer CreateLeaseMaintainer(FinalFactory.Rendezvous.Client.PublishedSession session, System.String publisherCredential)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<System.Boolean>> DeregisterAsync(FinalFactory.Rendezvous.Client.PublishedSession session, System.String publisherCredential, System.Threading.CancellationToken cancellationToken)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<FinalFactory.Rendezvous.Client.PublishedSession>> RegisterAsync(FinalFactory.Rendezvous.Contracts.RegisterSessionRequest request, System.String publisherCredential, System.Threading.CancellationToken cancellationToken)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<FinalFactory.Rendezvous.Contracts.RenewLeaseResponse>> RenewAsync(FinalFactory.Rendezvous.Client.PublishedSession session, System.String publisherCredential, System.Threading.CancellationToken cancellationToken)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<System.Boolean>> UpdateAsync(FinalFactory.Rendezvous.Client.PublishedSession session, FinalFactory.Rendezvous.Contracts.UpdateSessionRequest request, System.String publisherCredential, System.Threading.CancellationToken cancellationToken)
+TYPE FinalFactory.Rendezvous.Client.RendezvousSessionBrowserClient
+  CTOR (System.Net.Http.HttpClient httpClient, FinalFactory.Rendezvous.Client.RendezvousClientOptions options, FinalFactory.Rendezvous.Client.IRendezvousDelay delay)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<System.Collections.Generic.IReadOnlyList<FinalFactory.Rendezvous.Contracts.SessionListing>>> BrowseAllAsync(FinalFactory.Rendezvous.Contracts.BrowseSessionsRequest request, System.Int32 maximumPages, System.Threading.CancellationToken cancellationToken)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<FinalFactory.Rendezvous.Contracts.BrowseSessionsResponse>> BrowseAsync(FinalFactory.Rendezvous.Contracts.BrowseSessionsRequest request, System.Threading.CancellationToken cancellationToken)
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.RendezvousClientResult<FinalFactory.Rendezvous.Contracts.GetSessionResponse>> GetAsync(FinalFactory.Rendezvous.Contracts.SessionListingId listingId, FinalFactory.Rendezvous.Contracts.GameId gameId, FinalFactory.Rendezvous.Contracts.EnvironmentId environmentId, System.UInt32 protocolVersion, System.Threading.CancellationToken cancellationToken)
+TYPE FinalFactory.Rendezvous.Client.SessionLeaseMaintainer
+  EVENT System.EventHandler LeaseLost
+  METHOD System.Threading.Tasks.ValueTask DisposeAsync()
+  METHOD System.Threading.Tasks.Task<FinalFactory.Rendezvous.Client.LeaseMaintenanceResult> RunAsync(System.Threading.CancellationToken cancellationToken)

tests/FinalFactory.Rendezvous.Tests/TestData/Contracts/v1/contracts-public-api.txt

@@ -18,6 +18,7 @@ TYPE FinalFactory.Rendezvous.Contracts.BrowseSessionsRequest
   PROP System.Int32 ContractVersion {get;set;}
   PROP System.String Cursor {get;set;}
   PROP FinalFactory.Rendezvous.Contracts.EnvironmentId EnvironmentId {get;set;}
+  PROP System.Boolean ExcludeFull {get;set;}
   PROP FinalFactory.Rendezvous.Contracts.GameId GameId {get;set;}
   PROP System.Int32 PageSize {get;set;}
   PROP System.UInt32 ProtocolVersion {get;set;}