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buoy

High-Performance Erlang HTTP 1.1 Client

Build Status Coverage Status

Disclaimer:

This HTTP client has been designed for HTTP 1.1 with keep-alive. For performance reasons, it only implements a subset of RFC2616.

Unsupported Features:

  • Doesn't accept an arbitrary number of new lines in headers
  • Doesn't accept random capitalization of content-length header
  • Doesn't protect against malicious servers

API

Function Index

Examples

1> buoy_app:start().
{ok,[granderl,shackle,buoy]}

2> Url = buoy_utils:parse_url(<<"http://example.com">>).
{buoy_url,<<"example.com">>,<<"example.com">>,<<"/">>,80,
          http}

3> ok = buoy_pool:start(Url, [{pool_size, 1}]).
ok

4> {ok, Resp} = buoy:get(Url, #{timeout => 500}).
{ok,{buoy_resp,done,
               <<"<!doctype html>\n<html>\n<head>\n    <title>Example Domain</title>\n\n    <meta charset=\"utf-8\" />\n  "...>>,
               1270,
               [<<"Cache-Control: max-age=604800">>,
                <<"Content-Type: text/html">>,
                <<"Date: Mon, 20 Mar 2017 14:48:25 GMT">>,
                <<"Etag: \"359670651+gzip+ident\"">>,
                <<"Expires: Mon, 27 Mar 2017 14:48:25 GMT">>,
                <<"Last-Modified: Fri, 09 Aug 2013 23:54:35 GMT">>,
                <<"Server: ECS (cpm/F9D5)">>,<<"Vary: Accept-Encoding">>,
                <<"X-Cache: HIT">>,<<"Content-Length: 1270">>],
               <<"OK">>,200}}

5> {ok, Headers} = buoy_protocol:headers(Resp).
{ok,[{<<"Cache-Control">>,<<"max-age=604800">>},
     {<<"Content-Type">>,<<"text/html">>},
     {<<"Date">>,<<"Mon, 20 Mar 2017 14:48:25 GMT">>},
     {<<"Etag">>,<<"\"359670651+gzip+ident\"">>},
     {<<"Expires">>,<<"Mon, 27 Mar 2017 14:48:25 GMT">>},
     {<<"Last-Modified">>,<<"Fri, 09 Aug 2013 23:54:35 GMT">>},
     {<<"Server">>,<<"ECS (cpm/F9D5)">>},
     {<<"Vary">>,<<"Accept-Encoding">>},
     {<<"X-Cache">>,<<"HIT">>},
     {<<"Content-Length">>,<<"1270">>}]}

Pool Options

Name Type Default Description
backlog_size pos_integer() 1024 maximum number of concurrent requests per connection
pool_size pos_integer() 16 number of connections
pool_strategy random | round_robin random connection selection strategy
reconnect boolean() true reconnect closed connections
reconnect_time_max pos_integer() | infinity 120000 reconnect maximum time
reconnect_time_min pos_integer() 500 reconnect minimum time
socket_options [gen_tcp:connect_option() | ssl:tls_client_option()] [binary, {packet, line}, {packet, raw}, {send_timeout, 50}, {send_timeout_close, true}] options passed to the socket when connecting

Tests

make dialyzer
make elvis
make eunit
make xref

License

The MIT License (MIT)

Copyright (c) 2016-2017 Louis-Philippe Gauthier

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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