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fix: deprecate USE_FIXED_HTTP for SSE streaming support (Issue #524) (#525)

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* fix: deprecate USE_FIXED_HTTP for SSE streaming support (Issue #524)

The fixed HTTP implementation does not support SSE streaming required
by clients like OpenAI Codex. This commit deprecates USE_FIXED_HTTP
and makes SingleSessionHTTPServer the default.

Changes:
- Add deprecation warnings in src/mcp/index.ts and src/http-server.ts
- Remove USE_FIXED_HTTP from docker-compose.yml and Dockerfile.railway
- Update .env.example with deprecation notice
- Rename npm script to start:http:fixed:deprecated
- Update all documentation to remove USE_FIXED_HTTP references
- Mark test case as deprecated

Users should unset USE_FIXED_HTTP to use the modern SingleSessionHTTPServer
which supports both JSON-RPC and SSE streaming.

Closes #524

Concieved by Romuald Członkowski - www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* chore: bump version to 2.31.8 and add CHANGELOG entry

- Fix comment inaccuracy: "deprecated" not "deprecated and removed"
- Bump version from 2.31.7 to 2.31.8
- Add CHANGELOG entry documenting USE_FIXED_HTTP deprecation
- Update all deprecation messages to reference v2.31.8

Concieved by Romuald Członkowski - www.aiadvisors.pl/en

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Romuald Członkowski <romualdczlonkowski@MacBook-Pro-Romuald.local>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Romuald Członkowski
2026-01-07 13:42:16 +01:00
committed by GitHub
parent 7b0ff990ec
commit 861005eeed
13 changed files with 77 additions and 6839 deletions
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22
src/http-server.ts
View File

@@ -1,7 +1,14 @@
#!/usr/bin/env node
/**
* Fixed HTTP server for n8n-MCP that properly handles StreamableHTTPServerTransport initialization
* This implementation ensures the transport is properly initialized before handling requests
* @deprecated This fixed HTTP server is deprecated as of v2.31.8.
* Use SingleSessionHTTPServer from http-server-single-session.ts instead.
*
* This implementation does not support SSE streaming required by clients like OpenAI Codex.
* See: https://github.com/czlonkowski/n8n-mcp/issues/524
*
* Original purpose: Fixed HTTP server for n8n-MCP that properly handles
* StreamableHTTPServerTransport initialization by bypassing it entirely.
* This implementation ensures the transport is properly initialized before handling requests.
*/
import express from 'express';
import { Server } from '@modelcontextprotocol/sdk/server/index.js';
@@ -125,7 +132,18 @@ async function shutdown() {
}
}
/**
* @deprecated Use SingleSessionHTTPServer from http-server-single-session.ts instead.
* This function does not support SSE streaming required by clients like OpenAI Codex.
*/
export async function startFixedHTTPServer() {
// Log deprecation warning
logger.warn(
'DEPRECATION: startFixedHTTPServer() is deprecated as of v2.31.8. ' +
'Use SingleSessionHTTPServer which supports SSE streaming. ' +
'See: https://github.com/czlonkowski/n8n-mcp/issues/524'
);
validateEnvironment();
const app = express();