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We try to send a 500 error only if we didn't send the response headers yet. If they were, then we have no way to be sure the response was fully sent, nor should we assume anything about how this will be handled client-side, so we do nothing more and in both cases close the connection.
79 lines
3.8 KiB
Erlang
79 lines
3.8 KiB
Erlang
%% Copyright (c) 2011, Loïc Hoguin <essen@dev-extend.eu>
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%% Copyright (c) 2011, Anthony Ramine <nox@dev-extend.eu>
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%%
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%% Permission to use, copy, modify, and/or distribute this software for any
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%% purpose with or without fee is hereby granted, provided that the above
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%% copyright notice and this permission notice appear in all copies.
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%%
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%% THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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%% WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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%% MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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%% ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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%% WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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%% ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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%% OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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-type http_method() :: 'OPTIONS' | 'GET' | 'HEAD'
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| 'POST' | 'PUT' | 'DELETE' | 'TRACE' | binary().
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-type http_uri() :: '*' | {absoluteURI, http | https, Host::binary(),
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Port::integer() | undefined, Path::binary()}
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| {scheme, Scheme::binary(), binary()}
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| {abs_path, binary()} | binary().
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-type http_version() :: {Major::non_neg_integer(), Minor::non_neg_integer()}.
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-type http_header() :: 'Cache-Control' | 'Connection' | 'Date' | 'Pragma'
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| 'Transfer-Encoding' | 'Upgrade' | 'Via' | 'Accept' | 'Accept-Charset'
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| 'Accept-Encoding' | 'Accept-Language' | 'Authorization' | 'From' | 'Host'
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| 'If-Modified-Since' | 'If-Match' | 'If-None-Match' | 'If-Range'
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| 'If-Unmodified-Since' | 'Max-Forwards' | 'Proxy-Authorization' | 'Range'
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| 'Referer' | 'User-Agent' | 'Age' | 'Location' | 'Proxy-Authenticate'
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| 'Public' | 'Retry-After' | 'Server' | 'Vary' | 'Warning'
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| 'Www-Authenticate' | 'Allow' | 'Content-Base' | 'Content-Encoding'
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| 'Content-Language' | 'Content-Length' | 'Content-Location'
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| 'Content-Md5' | 'Content-Range' | 'Content-Type' | 'Etag'
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| 'Expires' | 'Last-Modified' | 'Accept-Ranges' | 'Set-Cookie'
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| 'Set-Cookie2' | 'X-Forwarded-For' | 'Cookie' | 'Keep-Alive'
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| 'Proxy-Connection' | binary().
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-type http_headers() :: list({http_header(), iodata()}).
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-type http_cookies() :: list({binary(), binary()}).
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-type http_status() :: non_neg_integer() | binary().
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-type http_resp_body() :: iodata() | {non_neg_integer(),
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fun(() -> {sent, non_neg_integer()})}.
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-record(http_req, {
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%% Transport.
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socket = undefined :: undefined | inet:socket(),
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transport = undefined :: undefined | module(),
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connection = keepalive :: keepalive | close,
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%% Request.
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pid = undefined :: pid(),
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method = 'GET' :: http_method(),
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version = {1, 1} :: http_version(),
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peer = undefined :: undefined | {inet:ip_address(), inet:ip_port()},
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host = undefined :: undefined | cowboy_dispatcher:tokens(),
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host_info = undefined :: undefined | cowboy_dispatcher:tokens(),
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raw_host = undefined :: undefined | binary(),
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port = undefined :: undefined | inet:ip_port(),
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path = undefined :: undefined | '*' | cowboy_dispatcher:tokens(),
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path_info = undefined :: undefined | cowboy_dispatcher:tokens(),
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raw_path = undefined :: undefined | binary(),
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qs_vals = undefined :: undefined | list({binary(), binary() | true}),
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raw_qs = undefined :: undefined | binary(),
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bindings = undefined :: undefined | cowboy_dispatcher:bindings(),
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headers = [] :: http_headers(),
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p_headers = [] :: [any()], %% @todo Improve those specs.
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cookies = undefined :: undefined | http_cookies(),
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meta = [] :: [{atom(), any()}],
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%% Request body.
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body_state = waiting :: waiting | done,
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buffer = <<>> :: binary(),
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%% Response.
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resp_state = waiting :: locked | waiting | chunks | done,
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resp_headers = [] :: http_headers(),
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resp_body = <<>> :: http_resp_body(),
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%% Functions.
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urldecode :: {fun((binary(), T) -> binary()), T}
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}).
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