fix(daemon): forward original request path and headers to upstream#191
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sh1ftred wants to merge 1 commit into
Open
fix(daemon): forward original request path and headers to upstream#191sh1ftred wants to merge 1 commit into
sh1ftred wants to merge 1 commit into
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Before this change, routeRequests() was called without the incoming request
path, causing the SDK to default to /v1/chat/completions even when Claude Code
was calling /v1/messages. This protocol mismatch made Claude Code fail with:
Stream completed without receiving message_start event
The fix threads the original url.pathname and sanitized request headers
(hop-by-hop headers stripped) through resolveRouteRequestContext() and into
client.routeRequest(), so:
- /v1/messages is forwarded upstream as /v1/messages (not rewritten)
- Anthropic-specific headers like anthropic-version are forwarded upstream
- Streaming responses use the correct SSE event format (message_start, etc.)
This makes the routstr daemon on port 8009 behave identically to a transparent
pass-through proxy from Claude Code's perspective.
Deploying routstr-chat with
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Problem
Claude Code sends requests to
POST /v1/messages(Anthropic protocol) but theroutstr daemon was silently rewriting the upstream path to
/v1/chat/completionsbecause
routeRequests()was called without passing the incomingurl.pathname.The SDK defaults to
/v1/chat/completionswhenpathis not provided.This caused Claude Code to receive OpenAI-style SSE (
chat.completion.chunk)instead of Anthropic SSE (
message_start,content_block_delta, etc.) andfail with:
Fix
sdk/routeRequests.ts — add optional
headers?: Record<string, string>to
RouteRequestOptionsand thread it throughresolveRouteRequestContext()into
client.routeRequest().scripts/routstr-daemon.ts — add
toForwardHeaders()helper that stripshop-by-hop headers (host, connection, content-length, transfer-encoding, etc.)
and passes both
path: url.pathnameand the sanitized headers intorouteRequests().Result
The daemon now forwards the exact same path and headers the client sent, so:
/v1/messagesstays/v1/messagesupstreamanthropic-versionand other Anthropic-specific headers are preservedThis makes port
8009behave identically to a transparent pass-through proxyfrom Claude Code's perspective.