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Small, fast, modern HTTP server for Erlang/OTP.
cowboyerlangfunctionalhigh-performancehttphttp-serverhttp2http2-serverhttpsproduction-readyrestwebweb-frameworkwebsocketwebsocket-serverwebsockets
![]() This callback is called when an error occurs before the request (including headers, excluding body) was fully received. The init/3 callback will not be called. The callback receives the partial Req object (possibly empty), the reason for the error and the response command that the server will send. It allows you to be aware of the error and possibly modify the response before it is sent. |
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= Cowboy Cowboy is a small, fast and modern HTTP server for Erlang/OTP. == Goals Cowboy aims to provide a *complete* HTTP stack in a *small* code base. It is optimized for *low latency* and *low memory usage*, in part because it uses *binary strings*. Cowboy provides *routing* capabilities, selectively dispatching requests to handlers written in Erlang. Because it uses Ranch for managing connections, Cowboy can easily be *embedded* in any other application. Cowboy is *clean* and *well tested* Erlang code. == Online documentation * http://ninenines.eu/docs/en/cowboy/2.0/guide[User guide] * http://ninenines.eu/docs/en/cowboy/2.0/manual[Function reference] == Offline documentation * While still online, run `make docs` * User guide available in `doc/` in PDF and HTML formats * Function reference man pages available in `doc/man3/` and `doc/man7/` * Run `make install-docs` to install man pages on your system * Full documentation in Asciidoc available in `doc/src/` * Examples available in `examples/` == Getting help * Official IRC Channel: #ninenines on irc.freenode.net * https://github.com/ninenines/cowboy/issues[Issues tracker] * http://ninenines.eu/services[Commercial Support]