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websocket: improve handling of 0-len frames

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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
This commit is contained in:
Stefan Eissing 2025-08-18 17:12:35 +02:00 • committed by Daniel Stenberg
parent fd2a204c23
commit fa3baabbd8
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11 changed files with 275 additions and 141 deletions
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16
tests/http/test_20_websockets.py
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@ -135,7 +135,7 @@ class TestWebsockets:
if not client.exists():
pytest.skip(f'example client not built: {client.name}')
url = f'ws://localhost:{env.ws_port}/'
r = client.run(args=[f'-{model}', '-m', str(0), '-M', str(10), url])
r = client.run(args=[f'-{model}', '-m', str(1), '-M', str(10), url])
r.check_exit_code(0)
@pytest.mark.parametrize("model", [
@ -193,3 +193,17 @@ class TestWebsockets:
large = 20000
r = client.run(args=[f'-{model}', '-c', str(count), '-m', str(large), url])
r.check_exit_code(0)
@pytest.mark.parametrize("model", [
pytest.param(1, id='multi_perform'),
pytest.param(2, id='curl_ws_send+recv'),
])
def test_20_09_data_empty(self, env: Env, ws_echo, model):
client = LocalClient(env=env, name='cli_ws_data')
if not client.exists():
pytest.skip(f'example client not built: {client.name}')
url = f'ws://localhost:{env.ws_port}/'
count = 10
large = 0
r = client.run(args=[f'-{model}', '-c', str(count), '-m', str(large), url])
r.check_exit_code(0)