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Make client config optional to McpClientFactory.CreateAsync (#65)

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* Make client config optional to McpClientFactory.CreateAsync

Unless you're specifying capabilities (sampling/rooting) or need a specific client name/version, the client information can be inferred from the assembly, simplifying the getting-started experience.

* Cache default options

* Update src/ModelContextProtocol/Client/McpClientFactory.cs

Co-authored-by: Eirik Tsarpalis <eirik.tsarpalis@gmail.com>

---------

Co-authored-by: Eirik Tsarpalis <eirik.tsarpalis@gmail.com>
This commit is contained in:
Stephen Toub 2025-03-24 11:01:13 -04:00 • committed by GitHub
commit 729e688b25
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1 changed files with 50 additions and 23 deletions
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27
src/ModelContextProtocol/Client/McpClientFactory.cs
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@ -6,15 +6,36 @@ using ModelContextProtocol.Protocol.Transport;
using ModelContextProtocol.Utils;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Logging.Abstractions;
using System.Reflection;
namespace ModelContextProtocol.Client;
/// <summary>Provides factory methods for creating MCP clients.</summary>
public static class McpClientFactory
{
/// <summary>Default client options to use when none are supplied.</summary>
private static readonly McpClientOptions s_defaultClientOptions = CreateDefaultClientOptions();
/// <summary>Creates default client options to use when no options are supplied.</summary>
private static McpClientOptions CreateDefaultClientOptions()
{
var asmName = (Assembly.GetEntryAssembly() ?? Assembly.GetExecutingAssembly()).GetName();
return new()
{
ClientInfo = new()
{
Name = asmName.Name ?? "McpClient",
Version = asmName.Version?.ToString() ?? "1.0.0",
},
};
}
/// <summary>Creates an <see cref="IMcpClient"/>, connecting it to the specified server.</summary>
/// <param name="serverConfig">Configuration for the target server to which the client should connect.</param>
/// <param name="clientOptions">A client configuration object which specifies client capabilities and protocol version.</param>
/// <param name="clientOptions">
/// A client configuration object which specifies client capabilities and protocol version.
/// If <see langword="null"/>, details based on the current process will be employed.
/// </param>
/// <param name="createTransportFunc">An optional factory method which returns transport implementations based on a server configuration.</param>
/// <param name="loggerFactory">A logger factory for creating loggers for clients.</param>
/// <param name="cancellationToken">A token to cancel the operation.</param>
@ -25,14 +46,14 @@ public static class McpClientFactory
/// <exception cref="InvalidOperationException"><paramref name="createTransportFunc"/> returns an invalid transport.</exception>
public static async Task<IMcpClient> CreateAsync(
McpServerConfig serverConfig,
McpClientOptions clientOptions,
McpClientOptions? clientOptions = null,
Func<McpServerConfig, ILoggerFactory?, IClientTransport>? createTransportFunc = null,
ILoggerFactory? loggerFactory = null,
CancellationToken cancellationToken = default)
{
Throw.IfNull(serverConfig);
Throw.IfNull(clientOptions);
clientOptions ??= s_defaultClientOptions;
createTransportFunc ??= CreateTransport;
string endpointName = $"Client ({serverConfig.Id}: {serverConfig.Name})";