TUN-6617: Dont fallback to http2 if QUIC conn was successful.

cloudflared falls back aggressively to HTTP/2 protocol if a connection
attempt with QUIC failed. This was done to ensure that machines with UDP
egress disabled did not stop clients from connecting to the cloudlfare
edge. This PR improves on that experience by having cloudflared remember
if a QUIC connection was successful which implies UDP egress works. In
this case, cloudflared does not fallback to HTTP/2 and keeps trying to
connect to the edge with QUIC.
This commit is contained in:
Sudarsan Reddy 2022-08-11 18:53:27 +01:00
parent 679a89c7df
commit 68d370af19
1 changed files with 5 additions and 3 deletions

View File

@ -61,10 +61,12 @@ def cloudflared_cmd(config, config_path, cfd_args, cfd_pre_args, root):
def run_cloudflared_background(cmd, allow_input, capture_output):
output = subprocess.PIPE if capture_output else subprocess.DEVNULL
stdin = subprocess.PIPE if allow_input else None
cfd = None
try:
cfd = subprocess.Popen(cmd, stdin=stdin, stdout=output, stderr=output)
yield cfd
finally:
if cfd:
cfd.terminate()
if capture_output:
LOGGER.info(f"cloudflared log: {cfd.stderr.read()}")