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Small, fast, modern HTTP server for Erlang/OTP.
cowboyerlangfunctionalhigh-performancehttphttp-serverhttp2http2-serverhttpsproduction-readyrestwebweb-frameworkwebsocketwebsocket-serverwebsockets
![]() For long-running connections it was possible for the connection window to become larger than allowed by the protocol because the window increases claimed by stream handlers were never reclaimed even if no data was consumed. The new code applies heuristics to fix this and reduce the number of WINDOW_UPDATE frames that are sent. It includes six new options to control that behavior: margin, max and threshold for both the connection and stream windows. The margin is some extra space added on top of the requested read size. The max is the maximum window size at any given time. The threshold is a minimum window size that must be reached before we even consider sending more WINDOW_UPDATE frames. We also avoid sending WINDOW_UPDATE frames when there is already enough space in the window, or when the read size is 0. Cowlib is set to master until a new tag is done. |
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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 * https://ninenines.eu/docs/en/cowboy/2.6/guide[User guide] * https://ninenines.eu/docs/en/cowboy/2.6/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] * https://ninenines.eu/services[Commercial Support]