bba5e5e0d4
Context - This code parses Server-Sent Events (SSE) from the legacy Chat Completions streaming API (wire_api = "chat"). - The upstream protocol terminates a stream with a final sentinel event: data: [DONE]. - Some of our test stubs/helpers historically end the stream with data: DONE (no brackets). How this was found - GitHub Actions on Windows failed in codex-app-server integration tests with wiremock verification errors (expected multiple POSTs, got 1). Diagnosis - The job logs included: codex_api::sse::chat: Failed to parse ChatCompletions SSE event ... data: DONE. - eventsource_stream surfaces the sentinel as a normal SSE event; it does not automatically close the stream. - The parser previously attempted to JSON-decode every data: payload. The sentinel is not JSON, so we logged and skipped it, then continued polling. - On servers that keep the HTTP connection open after emitting the sentinel (notably wiremock on Windows), skipping the sentinel meant we never emitted ResponseEvent::Completed. - Higher layers wait for completion before progressing (emitting approval requests and issuing follow-up model calls), so the test never reached the subsequent requests and wiremock panicked when its expected-call count was not met. Fix - Treat both data: [DONE] and data: DONE as explicit end-of-stream sentinels. - When a sentinel is seen, flush any pending assistant/reasoning items and emit ResponseEvent::Completed once. Tests - Add a regression unit test asserting we complete on the sentinel even if the underlying connection is not closed.
npm i -g @openai/codex
or brew install --cask codex
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Team, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.