The Codex/OpenAI Responses API does not support the stream_options
parameter. When clients (e.g. Amp CLI) include stream_options in their
requests, CLIProxyAPI forwards it as-is, causing a 400 error:
{"detail":"Unsupported parameter: stream_options"}
Strip stream_options alongside the other unsupported parameters
(previous_response_id, prompt_cache_retention, safety_identifier)
in Execute, ExecuteStream, and CountTokens.
Extract the cch hash from Claude Code's billing header in the system
prompt (x-anthropic-billing-header: ...cch=XXXXX;) and use it to derive
a deterministic conversation_id instead of generating a random UUID.
Same Claude Code session → same cch → same conversation_id → Cursor
server can reuse conversation state across multiple turns, preserving
tool call results and other context without re-encoding history.
Also cleans up temporary debug logging from previous iterations.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Include system prompt prefix (first 200 chars) in session key derivation.
Claude Code sessions have unique system prompts containing cwd, session_id,
file paths, etc., making collisions between concurrent sessions from the
same user virtually impossible.
Session key now = SHA256(apiKey + model + systemPrompt[:200] + firstUserMsg)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Include client API key in session key derivation to prevent different
users sharing the same proxy from accidentally resuming each other's
H2 streams when they send identical first messages with the same model.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
When an assistant message appears after tool results without a pending
user message, append it to the last turn's assistant text instead of
dropping it. Also add bakeToolResultsIntoTurns() to merge tool results
into turn context when no active H2 session exists for resume, ensuring
the model sees the full tool interaction history in follow-up requests.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Rewrite tool call mechanism from interrupt-resume to inline-wait mode:
processH2SessionFrames no longer exits on mcpArgs; instead blocks on
toolResultCh while continuing to handle KV/heartbeat messages, then
sends MCP result and continues processing text in the same goroutine.
Fixes the issue where server stopped generating text after resume.
- Add switchable output channel (outMu/currentOut) so first HTTP response
closes after tool_calls+[DONE], and resumed text goes to a new channel
returned by resumeWithToolResults. Reset streamParam on switch so
Translator produces fresh message_start/content_block_start events.
- Implement send-side H2 flow control: track server's initial window size
and WINDOW_UPDATE increments; Write() blocks when window exhausted.
Fixes RST_STREAM FLOW_CONTROL_ERROR on large requests (178KB+).
- Decode new InteractionUpdate fields: TurnEndedUpdate (field 14) as
stream termination signal, HeartbeatUpdate (field 13) silently ignored,
TokenDeltaUpdate (field 8) for token usage tracking.
- Include token usage in final stop chunk (prompt_tokens estimated from
payload size, completion_tokens from accumulated TokenDeltaUpdate deltas)
so Claude CLI status bar shows non-zero token counts.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Introduced a new method `buildRecord` in `usageReporter` to encapsulate record creation, improving code readability and maintainability.
- Added latency tracking to usage records, ensuring accurate reporting of request latencies.
- Updated tests to validate the inclusion of latency in usage records and ensure proper functionality of the new reporting structure.
feat(proxy): centralize proxy handling with `proxyutil` package and enhance test coverage
- Added `proxyutil` package to simplify proxy handling across the codebase.
- Refactored various components (`executor`, `cliproxy`, `auth`, etc.) to use `proxyutil` for consistent and reusable proxy logic.
- Introduced support for "direct" proxy mode to explicitly bypass all proxies.
- Updated tests to validate proxy behavior (e.g., `direct`, HTTP/HTTPS, and SOCKS5).
- Enhanced YAML configuration documentation for proxy options.
