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231 lines
8.9 KiB
231 lines
8.9 KiB
%%% File : ibrowse_test_server.erl
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%%% Author : Chandrashekhar Mullaparthi <chandrashekhar.mullaparthi@t-mobile.co.uk>
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%%% Description : A server to simulate various test scenarios
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%%% Created : 17 Oct 2010 by Chandrashekhar Mullaparthi <chandrashekhar.mullaparthi@t-mobile.co.uk>
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-module(ibrowse_test_server).
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-export([
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start_server/2,
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stop_server/1
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]).
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-record(request, {method, uri, version, headers = [], body = []}).
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-define(dec2hex(X), erlang:integer_to_list(X, 16)).
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start_server(Port, Sock_type) ->
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Fun = fun() ->
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register(server_proc_name(Port), self()),
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case do_listen(Sock_type, Port, [{active, false},
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{reuseaddr, true},
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{nodelay, true},
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{packet, http}]) of
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{ok, Sock} ->
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do_trace("Server listening on port: ~p~n", [Port]),
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accept_loop(Sock, Sock_type);
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Err ->
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erlang:error(
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lists:flatten(
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io_lib:format(
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"Failed to start server on port ~p. ~p~n",
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[Port, Err]))),
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exit({listen_error, Err})
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end
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end,
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spawn_link(Fun).
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stop_server(Port) ->
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server_proc_name(Port) ! stop,
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ok.
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server_proc_name(Port) ->
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list_to_atom("ibrowse_test_server_"++integer_to_list(Port)).
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do_listen(tcp, Port, Opts) ->
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gen_tcp:listen(Port, Opts);
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do_listen(ssl, Port, Opts) ->
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application:start(crypto),
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application:start(ssl),
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ssl:listen(Port, Opts).
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do_accept(tcp, Listen_sock) ->
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gen_tcp:accept(Listen_sock);
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do_accept(ssl, Listen_sock) ->
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ssl:ssl_accept(Listen_sock).
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accept_loop(Sock, Sock_type) ->
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case do_accept(Sock_type, Sock) of
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{ok, Conn} ->
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Pid = spawn_link(
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fun() ->
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server_loop(Conn, Sock_type, #request{})
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end),
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set_controlling_process(Conn, Sock_type, Pid),
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Pid ! {setopts, [{active, true}]},
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accept_loop(Sock, Sock_type);
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Err ->
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Err
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end.
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set_controlling_process(Sock, tcp, Pid) ->
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gen_tcp:controlling_process(Sock, Pid);
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set_controlling_process(Sock, ssl, Pid) ->
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ssl:controlling_process(Sock, Pid).
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setopts(Sock, tcp, Opts) ->
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inet:setopts(Sock, Opts);
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setopts(Sock, ssl, Opts) ->
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ssl:setopts(Sock, Opts).
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server_loop(Sock, Sock_type, #request{headers = Headers} = Req) ->
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receive
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{http, Sock, {http_request, HttpMethod, HttpUri, HttpVersion}} ->
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server_loop(Sock, Sock_type, Req#request{method = HttpMethod,
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uri = HttpUri,
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version = HttpVersion});
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{http, Sock, {http_header, _, _, _, _} = H} ->
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server_loop(Sock, Sock_type, Req#request{headers = [H | Headers]});
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{http, Sock, http_eoh} ->
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process_request(Sock, Sock_type, Req),
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server_loop(Sock, Sock_type, #request{});
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{http, Sock, {http_error, Err}} ->
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do_trace("Error parsing HTTP request:~n"
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"Req so far : ~p~n"
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"Err : ", [Req, Err]),
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exit({http_error, Err});
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{setopts, Opts} ->
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setopts(Sock, Sock_type, Opts),
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server_loop(Sock, Sock_type, Req);
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{tcp_closed, Sock} ->
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do_trace("Client closed connection~n", []),
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ok;
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stop ->
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ok;
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Other ->
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do_trace("Recvd unknown msg: ~p~n", [Other]),
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exit({unknown_msg, Other})
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after 5000 ->
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do_trace("Timing out client connection~n", []),
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ok
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end.
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do_trace(Fmt, Args) ->
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do_trace(get(my_trace_flag), Fmt, Args).
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do_trace(true, Fmt, Args) ->
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io:format("~s -- " ++ Fmt, [ibrowse_lib:printable_date() | Args]);
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do_trace(_, _, _) ->
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ok.
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process_request(Sock, Sock_type,
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#request{method='GET',
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headers = Headers,
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uri = {abs_path, "/ibrowse_stream_once_chunk_pipeline_test"}} = Req) ->
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Req_id = case lists:keysearch("X-Ibrowse-Request-Id", 3, Headers) of
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false ->
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"";
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{value, {http_header, _, _, _, Req_id_1}} ->
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Req_id_1
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end,
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Req_id_header = ["x-ibrowse-request-id: ", Req_id, "\r\n"],
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do_trace("Recvd req: ~p~n", [Req]),
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Body = string:join([integer_to_list(X) || X <- lists:seq(1,100)], "-"),
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Chunked_body = chunk_request_body(Body, 50),
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Resp_1 = [<<"HTTP/1.1 200 OK\r\n">>,
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Req_id_header,
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<<"Transfer-Encoding: chunked\r\n\r\n">>],
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Resp_2 = Chunked_body,
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do_send(Sock, Sock_type, Resp_1),
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timer:sleep(100),
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do_send(Sock, Sock_type, Resp_2);
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process_request(Sock, Sock_type,
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#request{method='GET',
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headers = _Headers,
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uri = {abs_path, "/ibrowse_inac_timeout_test"}} = Req) ->
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do_trace("Recvd req: ~p. Sleeping for 30 secs...~n", [Req]),
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timer:sleep(30000),
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do_trace("...Sending response now.~n", []),
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Resp = <<"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n">>,
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do_send(Sock, Sock_type, Resp);
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process_request(Sock, Sock_type,
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#request{method='HEAD',
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headers = _Headers,
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uri = {abs_path, "/ibrowse_head_transfer_enc"}}) ->
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Resp = <<"HTTP/1.1 400 Bad Request\r\nServer: Apache-Coyote/1.1\r\nContent-Length:5\r\nDate: Wed, 04 Apr 2012 16:53:49 GMT\r\n\r\nabcde">>,
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do_send(Sock, Sock_type, Resp);
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process_request(Sock, Sock_type,
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#request{method='HEAD',
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headers = _Headers,
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uri = {abs_path, "/ibrowse_head_test"}}) ->
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Resp = <<"HTTP/1.1 200 OK\r\nServer: Apache-Coyote/1.1\r\nTransfer-Encoding: chunked\r\nDate: Wed, 04 Apr 2012 16:53:49 GMT\r\nConnection: close\r\n\r\n">>,
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do_send(Sock, Sock_type, Resp);
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process_request(Sock, Sock_type,
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#request{method='POST',
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headers = _Headers,
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uri = {abs_path, "/ibrowse_303_no_body_test"}}) ->
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Resp = <<"HTTP/1.1 303 See Other\r\nLocation: http://example.org\r\n">>,
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do_send(Sock, Sock_type, Resp);
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process_request(Sock, Sock_type,
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#request{method='POST',
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headers = _Headers,
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uri = {abs_path, "/ibrowse_303_with_body_test"}}) ->
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Resp = <<"HTTP/1.1 303 See Other\r\nLocation: http://example.org\r\nContent-Length: 5\r\n\r\nabcde">>,
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do_send(Sock, Sock_type, Resp);
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process_request(Sock, Sock_type, Req) ->
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do_trace("Recvd req: ~p~n", [Req]),
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Resp = <<"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n">>,
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do_send(Sock, Sock_type, Resp).
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do_send(Sock, tcp, Resp) ->
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gen_tcp:send(Sock, Resp);
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do_send(Sock, ssl, Resp) ->
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ssl:send(Sock, Resp).
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%%------------------------------------------------------------------------------
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%% Utility functions
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%%------------------------------------------------------------------------------
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chunk_request_body(Body, _ChunkSize) when is_tuple(Body) orelse
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is_function(Body) ->
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Body;
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chunk_request_body(Body, ChunkSize) ->
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chunk_request_body(Body, ChunkSize, []).
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chunk_request_body(Body, _ChunkSize, Acc) when Body == <<>>; Body == [] ->
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LastChunk = "0\r\n",
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lists:reverse(["\r\n", LastChunk | Acc]);
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chunk_request_body(Body, ChunkSize, Acc) when is_binary(Body),
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size(Body) >= ChunkSize ->
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<<ChunkBody:ChunkSize/binary, Rest/binary>> = Body,
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Chunk = [?dec2hex(ChunkSize),"\r\n",
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ChunkBody, "\r\n"],
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chunk_request_body(Rest, ChunkSize, [Chunk | Acc]);
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chunk_request_body(Body, _ChunkSize, Acc) when is_binary(Body) ->
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BodySize = size(Body),
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Chunk = [?dec2hex(BodySize),"\r\n",
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Body, "\r\n"],
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LastChunk = "0\r\n",
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lists:reverse(["\r\n", LastChunk, Chunk | Acc]);
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chunk_request_body(Body, ChunkSize, Acc) when length(Body) >= ChunkSize ->
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{ChunkBody, Rest} = split_list_at(Body, ChunkSize),
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Chunk = [?dec2hex(ChunkSize),"\r\n",
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ChunkBody, "\r\n"],
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chunk_request_body(Rest, ChunkSize, [Chunk | Acc]);
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chunk_request_body(Body, _ChunkSize, Acc) when is_list(Body) ->
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BodySize = length(Body),
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Chunk = [?dec2hex(BodySize),"\r\n",
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Body, "\r\n"],
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LastChunk = "0\r\n",
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lists:reverse(["\r\n", LastChunk, Chunk | Acc]).
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split_list_at(List, N) ->
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split_list_at(List, N, []).
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split_list_at([], _, Acc) ->
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{lists:reverse(Acc), []};
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split_list_at(List2, 0, List1) ->
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{lists:reverse(List1), List2};
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split_list_at([H | List2], N, List1) ->
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split_list_at(List2, N-1, [H | List1]).
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