Error: Not actively managed by this transport

[TheWayneSwart]

When using http_dedicated transport on v.2.0.0 I see this error:

[2025-06-10 19:05:41] local.WARNING: Failed to save client state after updating activity. {"clientId":"e38a292c-23a0-4eb7-9d63-19aaf3b42d92"}
[2025-06-10 19:05:41] local.DEBUG: Received message {"clientId":"e38a292c-23a0-4eb7-9d63-19aaf3b42d92","frame":"{"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"Postman Client - 612b94cd-99e0-4300-ba2f-0598160f33c0","version":"1.0.0"}},"jsonrpc":"2.0","id":0}"}
[2025-06-10 19:05:41] local.WARNING: Attempted to send message to inactive or unknown client. {"clientId":"e38a292c-23a0-4eb7-9d63-19aaf3b42d92"}
[2025-06-10 19:05:41] local.ERROR: Transport failed to send response. {"clientId":"e38a292c-23a0-4eb7-9d63-19aaf3b42d92","responseId":0,"error":"Client 'e38a292c-23a0-4eb7-9d63-19aaf3b42d92' is not actively managed by this transport."}

Switching to dedicted transport, using mcp:serve everything works correctly.

But, trying to serve the MCP server using apache 2 with SSL, to no avail.

[michabbb]

for those who struggle with version 2 and a regular web server like frankenphp (caddy),
this fork works: https://github.com/php-mcp/laravel

BUT - keep in mind: sse is deprecated !

it makes more sense to choose a package that already supports HTTP Stream Transport.

[CodeWithKyrian]

Streamable HTTP Transport support is already in the works and should land within the next week, along with a few more improvements and bug fixes. Appreciate your patience and feedback!

[michabbb]

@CodeWithKyrian but please test before you release a new version because in version 2 were fundamentally bugs in that wasted a lot of our time 😞

[CodeWithKyrian]

Totally understand, and I appreciate the patience. Apologies for the earlier issues. I’ll make sure future releases are thoroughly tested and changes clearly documented to avoid that kind of friction again.