Daphne is a HTTP, HTTP2 and WebSocket protocol server for ASGI, and developed to power Django Channels.
It supports automatic negotiation of protocols; there’s no need for URL prefixing to determine WebSocket endpoints versus HTTP endpoints.
Running
Simply point Daphne to your ASGI channel layer instance, and optionally set a bind address and port (defaults to localhost, port 8000):
daphne -b 0.0.0.0 -p 8001 django_project.asgi:channel_layer
If you intend to run daphne behind a proxy server you can use UNIX sockets to communicate between the two:
daphne -u /tmp/daphne.sock django_project.asgi:channel_layer
If daphne is being run inside a process manager such as Circus you might want it to bind to a file descriptor passed down from a parent process. To achieve this you can use the –fd flag:
daphne --fd 5 django_project.asgi:channel_layer
To see all available command line options run daphne with the -h flag.
Root Path (SCRIPT_NAME)
In order to set the root path for Daphne, which is the equivalent of the WSGI SCRIPT_NAME setting, you have two options:
Pass a header value Daphne-Root-Path, with the desired root path as a URLencoded ASCII value. This header will not be passed down to applications.
Set the --root-path commandline option with the desired root path as a URLencoded ASCII value.
The header takes precedence if both are set. As with SCRIPT_ALIAS, the value should start with a slash, but not end with one; for example:
daphne --root-path=/forum django_project.asgi:channel_layer
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