prosody
ef490e9276df
net/http.lua

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net/http.lua @ 5693:ef490e9276df

util.dataforms: Return nil for empty list-mutli responses, to be consistent with other readers
author Florian Zeitz <florob@babelmonkeys.de>
date Fri, 14 Jun 2013 00:07:57 +0200
parent 5505:0b6a99e6c1b1
child 5714:520671c3159c
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rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9 local socket = require "socket"
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10 local b64 = require "util.encodings".base64.encode;
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11 local url = require "socket.url"
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12 local httpstream_new = require "net.http.parser".new;
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13 local util_http = require "util.http";
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14
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15 local ssl_available = pcall(require, "ssl");
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16
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17 local server = require "net.server"
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18
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19 local t_insert, t_concat = table.insert, table.concat;
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20 local pairs = pairs;
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21 local tonumber, tostring, xpcall, select, traceback =
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22 tonumber, tostring, xpcall, select, debug.traceback;
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23
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24 local log = require "util.logger".init("http");
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25
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26 module "http"
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27
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28 local requests = {}; -- Open requests
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29
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30 local listener = { default_port = 80, default_mode = "*a" };
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31
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32 function listener.onconnect(conn)
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33 local req = requests[conn];
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34 -- Send the request
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35 local request_line = { req.method or "GET", " ", req.path, " HTTP/1.1\r\n" };
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36 if req.query then
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37 t_insert(request_line, 4, "?"..req.query);
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38 end
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39
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40 conn:write(t_concat(request_line));
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41 local t = { [2] = ": ", [4] = "\r\n" };
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42 for k, v in pairs(req.headers) do
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43 t[1], t[3] = k, v;
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44 conn:write(t_concat(t));
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45 end
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46 conn:write("\r\n");
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47
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48 if req.body then
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49 conn:write(req.body);
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50 end
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51 end
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52
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53 function listener.onincoming(conn, data)
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54 local request = requests[conn];
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55
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56 if not request then
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57 log("warn", "Received response from connection %s with no request attached!", tostring(conn));
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58 return;
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59 end
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60
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61 if data and request.reader then
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62 request:reader(data);
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63 end
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64 end
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65
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66 function listener.ondisconnect(conn, err)
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67 local request = requests[conn];
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68 if request and request.conn then
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69 request:reader(nil, err);
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70 end
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71 requests[conn] = nil;
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72 end
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73
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74 local function request_reader(request, data, err)
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75 if not request.parser then
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76 local function error_cb(reason)
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77 if request.callback then
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78 request.callback(reason or "connection-closed", 0, request);
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79 request.callback = nil;
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80 end
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81 destroy_request(request);
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82 end
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83
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84 if not data then
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85 error_cb(err);
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86 return;
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87 end
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88
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89 local function success_cb(r)
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90 if request.callback then
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91 request.callback(r.body, r.code, r, request);
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92 request.callback = nil;
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93 end
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94 destroy_request(request);
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95 end
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96 local function options_cb()
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97 return request;
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98 end
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99 request.parser = httpstream_new(success_cb, error_cb, "client", options_cb);
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100 end
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101 request.parser:feed(data);
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102 end
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103
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104 local function handleerr(err) log("error", "Traceback[http]: %s", traceback(tostring(err), 2)); end
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105 function request(u, ex, callback)
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106 local req = url.parse(u);
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107
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108 if not (req and req.host) then
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109 callback(nil, 0, req);
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110 return nil, "invalid-url";
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111 end
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112
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113 if not req.path then
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114 req.path = "/";
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115 end
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116
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117 local method, headers, body;
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118
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119 headers = {
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120 ["Host"] = req.host;
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121 ["User-Agent"] = "Prosody XMPP Server";
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122 };
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123
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124 if req.userinfo then
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125 headers["Authorization"] = "Basic "..b64(req.userinfo);
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126 end
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127
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128 if ex then
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129 req.onlystatus = ex.onlystatus;
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130 body = ex.body;
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131 if body then
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132 method = "POST";
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133 headers["Content-Length"] = tostring(#body);
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134 headers["Content-Type"] = "application/x-www-form-urlencoded";
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135 end
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136 if ex.method then method = ex.method; end
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137 if ex.headers then
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138 for k, v in pairs(ex.headers) do
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139 headers[k] = v;
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140 end
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141 end
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142 end
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143
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144 -- Attach to request object
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145 req.method, req.headers, req.body = method, headers, body;
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146
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147 local using_https = req.scheme == "https";
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148 if using_https and not ssl_available then
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149 error("SSL not available, unable to contact https URL");
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150 end
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151 local port = tonumber(req.port) or (using_https and 443 or 80);
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152
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153 -- Connect the socket, and wrap it with net.server
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154 local conn = socket.tcp();
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155 conn:settimeout(10);
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156 local ok, err = conn:connect(req.host, port);
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157 if not ok and err ~= "timeout" then
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6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
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parents: 739
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158 callback(nil, 0, req);
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159 return nil, err;
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160 end
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161
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Matthew Wild <mwild1@gmail.com>
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162 local sslctx = false;
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163 if using_https then
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18ebc3874364 net.http: Disable SSLv2 support for HTTPS connections
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parents: 5353
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164 sslctx = ex and ex.sslctx or { mode = "client", protocol = "sslv23", options = { "no_sslv2" } };
5353
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165 end
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166
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167 req.handler, req.conn = server.wrapclient(conn, req.host, port, listener, "*a", sslctx);
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168 req.write = function (...) return req.handler:write(...); end
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169
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170 req.callback = function (content, code, request, response) log("debug", "Calling callback, status %s", code or "---"); return select(2, xpcall(function () return callback(content, code, request, response) end, handleerr)); end
616
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171 req.reader = request_reader;
678
1859edec2237 Protected call for HTTP request callbacks, to catch errors
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172 req.state = "status";
4351
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173
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Matthew Wild <mwild1@gmail.com>
parents: 4471
diff changeset
174 requests[req.handler] = req;
616
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175 return req;
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176 end
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177
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178 function destroy_request(request)
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179 if request.conn then
2673
61ae351c19b5 net.http: destroy_request(): Remove update for new server API, pass request.handler instead of request.conn to ondisconnect
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parents: 2672
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180 request.conn = nil;
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181 request.handler:close()
616
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182 end
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183 end
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184
5458
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parents: 5448
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185 local urlencode, urldecode = util_http.urlencode, util_http.urldecode;
84162b81c863 net.http, util.http: Move definitions of urlencode/decode and formencode/decode to util.http (possible to use them without unnecessary network-related dependencies)
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parents: 5448
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186 local formencode, formdecode = util_http.formencode, util_http.formdecode;
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187
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parents: 5448
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188 _M.urlencode, _M.urldecode = urlencode, urldecode;
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189 _M.formencode, _M.formdecode = formencode, formdecode;
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190
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191 return _M;