Please enable streamable-http protocol as connection with sse is breaking too much.

[dsolanki28]

I can get list of jobs but when I try to trigger a job, it get hangs with below error:

2025-07-17 07:31:36 info: [MCP][User: 68564f317c758484a4c29b6a][jenkins-project-dev] Establishing new connection
2025-07-17 07:31:36 info: [MCP][User: 68564f317c758484a4c29b6a][jenkins-project-dev] Creating SSE transport: https://project-dev.jenkins.com/mcp-server/sse
2025-07-17 07:31:36 info: [MCP][User: 68564f317c758484a4c29b6a][jenkins-project-dev] Connection successfully established
2025-07-17 07:32:47 error: [api/server/controllers/agents/client.js #sendCompletion] Operation aborted Aborted
2025-07-17 07:32:48 error: [MCP][User: 68564f317c758484a4c29b6a][jenkins-project-dev] Ping failed: Error POSTing to endpoint (HTTP 504): upstream request timeout
2025-07-17 07:32:48 error: [MCP][User: 68564f317c758484a4c29b6a][jenkins-project-dev][triggerBuild] Tool call failed This operation was aborted
2025-07-17 07:32:48 error: [MCP][User: 68564f317c758484a4c29b6a][jenkins-project-dev] Error calling "triggerBuild" MCP tool: This operation was aborted

I believe, this is related to sse protocol. I am using Jenkins version: 2.504.1 and mcp-server version: 0.26.v4a_0d810a_7f71

[topikachu]

@dsolanki28
This is a reasonable request. However, MCP is a complex protocol and quite tedious to implement from scratch.
Therefore, I've decided to use the official MCP Java SDK.

Unfortunately, the latest released version of the Java SDK is based on the 2024-11-05 spec, which doesn't support streamable HTTP.
The good news is that the community is actively working on the updated spec, and there's already an open PR addressing this feature.

I'm also waiting for the new SDK and will adopt it immediately once it's released.