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Overhaul McpClientFactory/McpServerFactory (#87)

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Handlers are now specified before connecting the client/server. Otherwise, race conditions exist. Handlers move into being a part of the McpClientOptions/McpServerOptions, so that they're provided to the factories. Where relevant, the handlers are specified as part of the capability descriptors, so that they go hand in hand.

The factories are no longer stateful. Instead of allocating a factory and then calling a create method on it, you just call a static factory method.
This commit is contained in:
Stephen Toub 2025-03-16 12:08:52 -04:00 • committed by GitHub
commit 08b0a04dab
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1 changed files with 1306 additions and 2243 deletions
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20
src/mcpdotnet/Protocol/Transport/SseClientTransport.cs
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@ -5,6 +5,7 @@ using System.Text.Json;
using McpDotNet.Configuration;
using McpDotNet.Logging;
using McpDotNet.Protocol.Messages;
using McpDotNet.Utils;
using McpDotNet.Utils.Json;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Abstractions;
@ -54,27 +55,16 @@ public sealed class SseClientTransport : TransportBase, IClientTransport
public SseClientTransport(SseClientTransportOptions transportOptions, McpServerConfig serverConfig, HttpClient httpClient, ILoggerFactory? loggerFactory, bool ownsHttpClient = false)
: base(loggerFactory)
{
if (transportOptions is null)
{
throw new ArgumentNullException(nameof(transportOptions));
}
if (serverConfig is null)
{
throw new ArgumentNullException(nameof(serverConfig));
}
if (httpClient is null)
{
throw new ArgumentNullException(nameof(httpClient));
}
Throw.IfNull(transportOptions);
Throw.IfNull(serverConfig);
Throw.IfNull(httpClient);
_options = transportOptions;
_serverConfig = serverConfig;
_sseEndpoint = new Uri(serverConfig.Location!);
_httpClient = httpClient;
_connectionCts = new CancellationTokenSource();
_logger = loggerFactory is not null ? loggerFactory.CreateLogger<SseClientTransport>() : NullLogger.Instance;
_logger = (ILogger?)loggerFactory?.CreateLogger<SseClientTransport>() ?? NullLogger.Instance;
_jsonOptions = JsonSerializerOptionsExtensions.DefaultOptions;
_connectionEstablished = new TaskCompletionSource<bool>();
_ownsHttpClient = ownsHttpClient;