prosody
a1cf1d623695
net/httpserver.lua

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net/httpserver.lua @ 1111:a1cf1d623695

net.http, net.httpserver: Remove urlcodes table... it really isn't needed (thanks Jan Harkes)
author Matthew Wild <mwild1@gmail.com>
date Mon, 04 May 2009 19:53:31 +0100
parent 1110:ececc4162d58
child 1112:e8a00a2ea910
child 1113:89ac8e9e1426
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rev   line source
634
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1
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2 local socket = require "socket"
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3 local server = require "net.server"
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4 local url_parse = require "socket.url".parse;
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5
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6 local connlisteners_start = require "net.connlisteners".start;
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7 local connlisteners_get = require "net.connlisteners".get;
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8 local listener;
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9
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10 local t_insert, t_concat = table.insert, table.concat;
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11 local s_match, s_gmatch = string.match, string.gmatch;
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12 local tonumber, tostring, pairs = tonumber, tostring, pairs;
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13
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14 local urlencode = function (s) return s and (s:gsub("%W", function (c) return string.format("%%%x", c:byte()); end)); end
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15
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16 local log = require "util.logger".init("httpserver");
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17
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18 local http_servers = {};
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19
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20 module "httpserver"
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21
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22 local default_handler;
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23
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24 local function expectbody(reqt)
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25 return reqt.method == "POST";
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26 end
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27
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28 local function send_response(request, response)
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29 -- Write status line
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30 local resp;
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31 if response.body then
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32 log("debug", "Sending response to %s", request.id);
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33 resp = { "HTTP/1.0 ", response.status or "200 OK", "\r\n"};
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34 local h = response.headers;
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35 if h then
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36 for k, v in pairs(h) do
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37 t_insert(resp, k);
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38 t_insert(resp, ": ");
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39 t_insert(resp, v);
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40 t_insert(resp, "\r\n");
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41 end
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42 end
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43 if response.body and not (h and h["Content-Length"]) then
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44 t_insert(resp, "Content-Length: ");
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45 t_insert(resp, #response.body);
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46 t_insert(resp, "\r\n");
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47 end
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48 t_insert(resp, "\r\n");
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49
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50 if response.body and request.method ~= "HEAD" then
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51 t_insert(resp, response.body);
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52 end
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53 else
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54 -- Response we have is just a string (the body)
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55 log("debug", "Sending response to %s: %s", request.id, response);
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56
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57 resp = { "HTTP/1.0 200 OK\r\n" };
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58 t_insert(resp, "Connection: close\r\n");
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59 t_insert(resp, "Content-Length: ");
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60 t_insert(resp, #response);
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61 t_insert(resp, "\r\n\r\n");
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62
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63 t_insert(resp, response);
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64 end
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65 request.write(t_concat(resp));
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66 if not request.stayopen then
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67 request:destroy();
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68 end
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69 end
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70
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71 local function call_callback(request, err)
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72 if request.handled then return; end
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73 request.handled = true;
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74 local callback = request.callback;
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75 if not callback and request.path then
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76 local path = request.url.path;
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77 local base = path:match("^/([^/?]+)");
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78 if not base then
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79 base = path:match("^http://[^/?]+/([^/?]+)");
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80 end
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81
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82 callback = (request.server and request.server.handlers[base]) or default_handler;
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83 if callback == default_handler then
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84 log("debug", "Default callback for this request (base: "..tostring(base)..")")
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85 end
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86 end
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87 if callback then
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88 if err then
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89 log("debug", "Request error: "..err);
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90 if not callback(nil, err, request) then
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91 destroy_request(request);
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92 end
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93 return;
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94 end
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95
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96 local response = callback(request.method, request.body and t_concat(request.body), request);
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97 if response then
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98 if response == true and not request.destroyed then
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99 -- Keep connection open, we will reply later
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100 log("warn", "Request %s left open, on_destroy is %s", request.id, tostring(request.on_destroy));
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101 elseif response ~= true then
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102 -- Assume response
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103 send_response(request, response);
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104 destroy_request(request);
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105 end
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106 else
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107 log("debug", "Request handler provided no response, destroying request...");
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108 -- No response, close connection
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109 destroy_request(request);
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110 end
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111 end
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112 end
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113
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114 local function request_reader(request, data, startpos)
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115 if not data then
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116 if request.body then
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117 call_callback(request);
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118 else
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119 -- Error.. connection was closed prematurely
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120 call_callback(request, "connection-closed");
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121 end
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122 -- Here we force a destroy... the connection is gone, so we can't reply later
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123 destroy_request(request);
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124 return;
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125 end
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126 if request.state == "body" then
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127 log("debug", "Reading body...")
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128 if not request.body then request.body = {}; request.havebodylength, request.bodylength = 0, tonumber(request.headers["content-length"]); end
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129 if startpos then
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130 data = data:sub(startpos, -1)
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131 end
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132 t_insert(request.body, data);
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133 if request.bodylength then
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134 request.havebodylength = request.havebodylength + #data;
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135 if request.havebodylength >= request.bodylength then
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136 -- We have the body
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137 call_callback(request);
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138 end
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139 end
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140 elseif request.state == "headers" then
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141 log("debug", "Reading headers...")
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142 local pos = startpos;
697
8ddc85fa7602 core.httpserver: Rename request.responseheaders to the more logical request.headers
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143 local headers = request.headers or {};
634
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144 for line in data:gmatch("(.-)\r\n") do
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145 startpos = (startpos or 1) + #line + 2;
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146 local k, v = line:match("(%S+): (.+)");
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147 if k and v then
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148 headers[k:lower()] = v;
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149 -- log("debug", "Header: "..k:lower().." = "..v);
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150 elseif #line == 0 then
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diff changeset
151 request.headers = headers;
634
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152 break;
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153 else
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154 log("debug", "Unhandled header line: "..line);
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155 end
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156 end
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157
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158 if not expectbody(request) then
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159 call_callback(request);
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160 return;
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161 end
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162
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163 -- Reached the end of the headers
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164 request.state = "body";
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165 if #data > startpos then
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166 return request_reader(request, data:sub(startpos, -1));
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167 end
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168 elseif request.state == "request" then
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169 log("debug", "Reading request line...")
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170 local method, path, http, linelen = data:match("^(%S+) (%S+) HTTP/(%S+)\r\n()", startpos);
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171 if not method then
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172 return call_callback(request, "invalid-status-line");
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173 end
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174
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175 request.method, request.path, request.httpversion = method, path, http;
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176
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177 request.url = url_parse(request.path);
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178
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179 log("debug", method.." request for "..tostring(request.path) .. " on port "..request.handler.serverport());
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180
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181 if request.onlystatus then
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diff changeset
182 if not call_callback(request) then
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183 return;
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parents:
diff changeset
184 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
185 end
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parents:
diff changeset
186
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187 request.state = "headers";
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188
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diff changeset
189 if #data > linelen then
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190 return request_reader(request, data:sub(linelen, -1));
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parents:
diff changeset
191 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
192 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
193 end
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
194
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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195 -- The default handler for requests
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196 default_handler = function (method, body, request)
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197 log("debug", method.." request for "..tostring(request.path) .. " on port "..request.handler.serverport());
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diff changeset
198 return { status = "404 Not Found",
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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diff changeset
199 headers = { ["Content-Type"] = "text/html" },
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parents:
diff changeset
200 body = "<html><head><title>Page Not Found</title></head><body>Not here :(</body></html>" };
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
201 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
202
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
203
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diff changeset
204 function new_request(handler)
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
205 return { handler = handler, conn = handler.socket,
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
206 write = handler.write, state = "request",
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parents:
diff changeset
207 server = http_servers[handler.serverport()],
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diff changeset
208 send = send_response,
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diff changeset
209 destroy = destroy_request,
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
210 id = tostring{}:match("%x+$")
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diff changeset
211 };
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
212 end
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parents:
diff changeset
213
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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diff changeset
214 function destroy_request(request)
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diff changeset
215 log("debug", "Destroying request %s", request.id);
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parents:
diff changeset
216 listener = listener or connlisteners_get("httpserver");
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
217 if not request.destroyed then
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parents:
diff changeset
218 request.destroyed = true;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
219 if request.on_destroy then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
220 log("debug", "Request has destroy callback");
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
221 request.on_destroy(request);
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
222 else
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
223 log("debug", "Request has no destroy callback");
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
224 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
225 request.handler.close()
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
226 if request.conn then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
227 listener.disconnect(request.conn, "closed");
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
228 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
229 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
230 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
231
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
232 function new(params)
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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diff changeset
233 local http_server = http_servers[params.port];
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
234 if not http_server then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
235 http_server = { handlers = {} };
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
236 http_servers[params.port] = http_server;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
237 -- We weren't already listening on this port, so start now
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
238 connlisteners_start("httpserver", params);
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
239 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
240 if params.base then
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
241 http_server.handlers[params.base] = params.handler;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
242 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
243 end
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
244
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
245 _M.request_reader = request_reader;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
246 _M.send_response = send_response;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
247 _M.urlencode = urlencode;
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
248
1af93ea23f96 Adding initial net.httpserver (lots of work to do on it)
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parents:
diff changeset
249 return _M;