Streamable HTTP Transport Support

[bytestream]

Does this client work with the https://github.com/php-mcp/server/tree/d2c583302c4d08dea887c7cbae49c767b0ce75b9?tab=readme-ov-file#3--streamable-http-transport-recommended ?

When I connect to the server I see Connection failed: HTTP connection failed: HTTP status code 406 (Not Acceptable)

The solution was to set MCP_HTTP_DEDICATED_LEGACY=true, set the client to connect to 'http://127.0.0.1:8090/mcp/sse' and restart the server:

$ php artisan mcp:serve --transport=http
Starting MCP server on http://127.0.0.1:8090
  - Transport: Legacy HTTP
  - SSE endpoint: http://127.0.0.1:8090/mcp/sse
  - Message endpoint: http://127.0.0.1:8090/mcp/message
  - Mode: Server-Sent Events

[manu144x]

I had to do the same.

Basically as of now you can't run both a server and client on the same Laravel application :)

The client only wants legacy, but the server only wants streamable.

I solved it with supervisor by running 2 server, one legacy, one standard, in the legacy I inject the MCP_HTTP_DEDICATED_LEGACY via supervisor environment option and it works.

[gr3p1p3]

I made a fork for this https://github.com/gr3p1p3/php-mcp-client

I'll try to push my changes in this original Repo, but the owner same to be "offline" for a while!