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Fix for CPython "Adress already in use" error #79

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Merged
merged 3 commits into from
Feb 5, 2024
Merged

Fix for CPython "Adress already in use" error #79

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8d55322
Updated CPython example to use port 5000 by default and added explana…
michalpokusa Feb 1, 2024
6944481
Added reuse behaviour for CPython
michalpokusa Feb 1, 2024
145a095
Merge branch 'main' into cpython-fix
michalpokusa Feb 1, 2024
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12 changes: 9 additions & 3 deletions adafruit_httpserver/server.py
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Original file line number Diff line number Diff line change
Expand Up @@ -210,9 +210,15 @@ def start(self, host: str, port: int = 80) -> None:
self._sock = self._socket_source.socket(
self._socket_source.AF_INET, self._socket_source.SOCK_STREAM
)
self._sock.bind((host, port))
self._sock.listen(10)
self._sock.setblocking(False) # Non-blocking socket
try:
# Only for CPython, prevents "Address already in use" error
self._sock.setsockopt(
self._socket_source.SOL_SOCKET, self._socket_source.SO_REUSEADDR, 1
)
finally:
self._sock.bind((host, port))
self._sock.listen(10)
self._sock.setblocking(False) # Non-blocking socket

if self.debug:
_debug_started_server(self)
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3 changes: 2 additions & 1 deletion examples/httpserver_cpython.py
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Expand Up @@ -19,5 +19,6 @@ def base(request: Request):
return Response(request, "Hello from the CircuitPython HTTP Server!")


# runs on port 5000; ports < 1024 require sudo.
# Ports below 1024 are reserved for root user only.
# If you want to run this example on a port below 1024, you need to run it as root (or with `sudo`).
server.serve_forever("0.0.0.0", 5000)