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Hai Chang
798fd673e9
Codex CLI 0.125+ defaults to sending request bodies with Content-Encoding: zstd. Without server-side decompression the gateway returns 'Failed to parse request body' on /v1/responses (and any other JSON endpoint) because gjson sees raw zstd bytes. ReadRequestBodyWithPrealloc now inspects Content-Encoding and transparently decodes zstd, gzip/x-gzip, and deflate bodies before returning them, then strips the encoding headers and updates ContentLength so downstream code can reuse the bytes safely. Unsupported encodings produce a clear error. Adds unit tests covering identity, zstd, gzip, deflate, unsupported encoding, corrupt zstd payloads, nil bodies, and explicit identity.