prosody
de04897cb8fe
net/httpserver.lua

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net/httpserver.lua @ 4658:de04897cb8fe

net.httpserver: Comment dependency on connlisteners. Further cleanup to follow.
author Waqas Hussain <waqas20@gmail.com>
date Sun, 22 Apr 2012 23:43:34 +0500
parent 4446:d1d4d8c8a2a9
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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
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10 local url_parse = require "socket.url".parse;
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11 local httpstream_new = require "util.httpstream".new;
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12
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13 --local connlisteners_start = require "net.connlisteners".start;
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14 --local connlisteners_get = require "net.connlisteners".get;
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15 local listener;
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16
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17 local t_insert, t_concat = table.insert, table.concat;
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18 local tonumber, tostring, pairs, ipairs, type = tonumber, tostring, pairs, ipairs, type;
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19 local xpcall = xpcall;
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20 local debug_traceback = debug.traceback;
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21
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22 local urlencode = function (s) return s and (s:gsub("%W", function (c) return ("%%%02x"):format(c:byte()); end)); end
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23
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24 local log = require "util.logger".init("httpserver");
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25
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26 local http_servers = {};
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27
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28 module "httpserver"
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29
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30 local default_handler;
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31
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32 local function send_response(request, response)
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33 -- Write status line
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34 local resp;
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35 if response.body or response.headers then
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36 local body = response.body and tostring(response.body);
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37 log("debug", "Sending response to %s", request.id);
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38 resp = { "HTTP/1.0 "..(response.status or "200 OK").."\r\n" };
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39 local h = response.headers;
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40 if h then
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41 for k, v in pairs(h) do
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42 t_insert(resp, k..": "..v.."\r\n");
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43 end
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44 end
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45 if body and not (h and h["Content-Length"]) then
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46 t_insert(resp, "Content-Length: "..#body.."\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 body and request.method ~= "HEAD" then
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51 t_insert(resp, body);
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52 end
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53 request.write(t_concat(resp));
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54 else
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55 -- Response we have is just a string (the body)
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56 log("debug", "Sending 200 response to %s", request.id or "<none>");
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57
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58 local resp = "HTTP/1.0 200 OK\r\n"
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59 .. "Connection: close\r\n"
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60 .. "Content-Type: text/html\r\n"
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61 .. "Content-Length: "..#response.."\r\n"
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62 .. "\r\n"
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63 .. response;
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64
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65 request.write(resp);
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66 end
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67 if not request.stayopen then
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68 request:destroy();
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69 end
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70 end
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71
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72 local function call_callback(request, err)
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73 if request.handled then return; end
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74 request.handled = true;
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75 local callback = request.callback;
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76 if not callback and request.path then
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77 local path = request.url.path;
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78 local base = path:match("^/([^/?]+)");
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79 if not base then
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80 base = path:match("^http://[^/?]+/([^/?]+)");
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81 end
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82
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83 callback = (request.server and request.server.handlers[base]) or default_handler;
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84 end
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85 if callback then
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86 local _callback = callback;
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87 function callback(method, body, request)
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88 local ok, result = xpcall(function() return _callback(method, body, request) end, debug_traceback);
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89 if ok then return result; end
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90 log("error", "Error in HTTP server handler: %s", result);
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91 -- TODO: When we support pipelining, request.destroyed
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92 -- won't be the right flag - we just want to see if there
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93 -- has been a response to this request yet.
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94 if not request.destroyed then
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95 return {
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96 status = "500 Internal Server Error";
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97 headers = { ["Content-Type"] = "text/plain" };
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98 body = "There was an error processing your request. See the error log for more details.";
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99 };
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100 end
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101 end
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102 if err then
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103 log("debug", "Request error: "..err);
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104 if not callback(nil, err, request) then
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105 destroy_request(request);
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106 end
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107 return;
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108 end
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109
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110 local response = callback(request.method, request.body and t_concat(request.body), request);
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111 if response then
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112 if response == true and not request.destroyed then
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113 -- Keep connection open, we will reply later
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114 log("debug", "Request %s left open, on_destroy is %s", request.id, tostring(request.on_destroy));
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115 elseif response ~= true then
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116 -- Assume response
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117 send_response(request, response);
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118 destroy_request(request);
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119 end
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120 else
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121 log("debug", "Request handler provided no response, destroying request...");
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122 -- No response, close connection
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123 destroy_request(request);
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124 end
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125 end
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126 end
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127
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128 local function request_reader(request, data, startpos)
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129 if not request.parser then
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130 local function success_cb(r)
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131 for k,v in pairs(r) do request[k] = v; end
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132 request.url = url_parse(request.path);
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133 request.url.path = request.url.path and request.url.path:gsub("%%(%x%x)", function(x) return x.char(tonumber(x, 16)) end);
3497
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134 request.body = { request.body };
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135 call_callback(request);
2837
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136 end
3497
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137 local function error_cb(r)
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138 call_callback(request, r or "connection-closed");
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139 destroy_request(request);
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140 end
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141 request.parser = httpstream_new(success_cb, error_cb);
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142 end
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143 request.parser:feed(data);
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144 end
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145
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146 -- The default handler for requests
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147 default_handler = function (method, body, request)
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148 log("debug", method.." request for "..tostring(request.path) .. " on port "..request.handler:serverport());
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149 return { status = "404 Not Found",
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150 headers = { ["Content-Type"] = "text/html" },
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151 body = "<html><head><title>Page Not Found</title></head><body>Not here :(</body></html>" };
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152 end
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153
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154
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155 function new_request(handler)
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156 return { handler = handler, conn = handler,
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157 write = function (...) return handler:write(...); end, state = "request",
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158 server = http_servers[handler:serverport()],
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159 send = send_response,
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160 destroy = destroy_request,
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161 id = tostring{}:match("%x+$")
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162 };
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163 end
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164
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165 function destroy_request(request)
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166 log("debug", "Destroying request %s", request.id);
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167 --listener = listener or connlisteners_get("httpserver");
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168 if not request.destroyed then
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169 request.destroyed = true;
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170 if request.on_destroy then
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171 log("debug", "Request has destroy callback");
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172 request.on_destroy(request);
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173 else
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174 log("debug", "Request has no destroy callback");
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175 end
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176 request.handler:close()
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177 if request.conn then
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178 listener.ondisconnect(request.conn, "closed");
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179 end
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180 end
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181 end
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182
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183 function new(params)
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184 local http_server = http_servers[params.port];
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185 if not http_server then
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186 http_server = { handlers = {} };
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187 http_servers[params.port] = http_server;
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188 -- We weren't already listening on this port, so start now
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189 --connlisteners_start("httpserver", params);
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190 end
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191 if params.base then
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192 http_server.handlers[params.base] = params.handler;
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193 end
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194 end
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195
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196 function set_default_handler(handler)
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197 default_handler = handler;
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198 end
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199
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200 function new_from_config(ports, handle_request, default_options)
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201 if type(handle_request) == "string" then -- COMPAT with old plugins
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202 log("warn", "Old syntax of httpserver.new_from_config being used to register %s", handle_request);
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203 handle_request, default_options = default_options, { base = handle_request };
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204 end
3757
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205 ports = ports or {5280};
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206 for _, options in ipairs(ports) do
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207 local port = default_options.port or 5280;
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208 local base = default_options.base;
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209 local ssl = default_options.ssl or false;
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210 local interface = default_options.interface;
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211 if type(options) == "number" then
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212 port = options;
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213 elseif type(options) == "table" then
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214 port = options.port or port;
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215 base = options.path or base;
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216 ssl = options.ssl or ssl;
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217 interface = options.interface or interface;
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diff changeset
218 elseif type(options) == "string" then
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219 base = options;
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220 end
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diff changeset
221
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diff changeset
222 if ssl then
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diff changeset
223 ssl.mode = "server";
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diff changeset
224 ssl.protocol = "sslv23";
2767
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parents: 2761
diff changeset
225 ssl.options = "no_sslv2";
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226 end
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diff changeset
227
3540
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228 new{ port = port, interface = interface,
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diff changeset
229 base = base, handler = handle_request,
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43b7c0980d23 net.httpserver: Pass on interface option from new_from_config() (thanks Chris)
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parents: 1868
diff changeset
230 ssl = ssl, type = (ssl and "ssl") or "tcp" };
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diff changeset
231 end
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232 end
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diff changeset
233
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234 _M.request_reader = request_reader;
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235 _M.send_response = send_response;
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236 _M.urlencode = urlencode;
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237
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238 return _M;