Release v0.6.3 · true-async/server

Added

One-shot brotli compress with BROTLI_PARAM_SIZE_HINT (Step 4 of perf TODO). apply_buffered uses the stateless one-pass BrotliEncoderCompress() when the body is fully known. The size hint lets the encoder right-size its ring buffer / hash tables for the actual payload instead of for arbitrary streaming. New optional vtable slots compress_oneshot + max_compressed_size; streaming path stays for chunked / unknown-length responses. Closes the brotli encode gap vs Swoole's BrotliEncoderCompress-based path. C-side defaults stay production-typical (gzip 6, brotli 4); bench callers set setCompressionLevel(1) / setBrotliLevel(1) for Swoole-equivalent throughput.
Loud stderr logging on unexpected worker thread exits in pool_worker_handler — covers uncaught $server->start() exceptions, clean returns while the await loop still expects workers, and server-transfer failure. Previously each case silently dropped 1/N of accept capacity with no operator signal.

Connection: close request header now produces Connection: close in the response (RFC 9112 §9.6). The parser already flipped req->keep_alive = false and the dispose path closed the FD, but the missing response header left clients unable to tell the TCP was not reusable until the next write hit ECONNRESET — wrk under -H 'Connection: close' counted every reply as a read error. Side effect on the local short-lived bench (wrk c=512 d=10s): 174k → 230k RPS, p50 14.5 ms → 2.5 ms, read-errors 2.0M → 0.

Server-side codec preference order flipped to zstd > gzip > brotli > identity. Clients sending the common gzip, br Accept-Encoding now get gzip — the brotli pool can't reuse encoder state (libbrotli has no public reset API), so until the arena-allocator follow-up lands, gzip's deflateReset path is the better default. Clients that explicitly want brotli via q-values (br;q=1.0, gzip;q=0.5) still get it.

Accept-Encoding	TAS v0.6.3	Swoole	Δ
br	106k	94k	+13%
gzip	94k	67k	+40%
gzip, br	95k	95k	parity