Change #244019

Comments

websocket: improve handling of 0-len frames

Write out 9-length frames to client's WRITEFUNCTION
Read 0-length frames from READFUNCTION *if* the function
started a new frame via `curl_ws_start_frame()`.

Fixes #18286
Closes #18332
Reported-by: Andriy Druk

Changed files

• docs/libcurl/curl_ws_start_frame.md
• lib/cw-out.c
• lib/http.c
• lib/http_chunks.c
• lib/mime.c
• lib/sendf.c
• lib/sendf.h
• lib/smtp.c
• lib/ws.c
• tests/http/test_20_websockets.py
• tests/libtest/cli_ws_data.c