prosody
c85f9a4ae1c4
net/http.lua

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net/http.lua @ 3545:c85f9a4ae1c4

util.template: Initial commit. A template library for XML stanzas.
author Waqas Hussain <waqas20@gmail.com>
date Sun, 24 Oct 2010 15:06:13 +0500
parent 3540:bc139431830b
child 3569:f30da46e0add
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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 socket = require "socket"
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11 local mime = require "mime"
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12 local url = require "socket.url"
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13
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14 local server = require "net.server"
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15
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16 local connlisteners_get = require "net.connlisteners".get;
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17 local listener = connlisteners_get("httpclient") or error("No httpclient listener!");
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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, ipairs = pairs, ipairs;
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21 local tonumber, tostring, xpcall, select, debug_traceback, char, format =
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22 tonumber, tostring, xpcall, select, debug.traceback, string.char, string.format;
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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 function urlencode(s) return s and (s:gsub("%W", function (c) return format("%%%02x", c:byte()); end)); end
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29 function urldecode(s) return s and (s:gsub("%%(%x%x)", function (c) return char(tonumber(c,16)); end)); end
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30
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31 local function _formencodepart(s)
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32 return s and (s:gsub("%W", function (c)
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33 if c ~= " " then
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34 return format("%%%02x", c:byte());
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35 else
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36 return "+";
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37 end
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38 end));
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39 end
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40 function formencode(form)
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41 local result = {};
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42 for _, field in ipairs(form) do
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43 t_insert(result, _formencodepart(field.name).."=".._formencodepart(field.value));
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44 end
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45 return t_concat(result, "&");
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46 end
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47
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48 local function expectbody(reqt, code)
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49 if reqt.method == "HEAD" then return nil end
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50 if code == 204 or code == 304 or code == 301 then return nil end
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51 if code >= 100 and code < 200 then return nil end
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52 return 1
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53 end
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54
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55 local function request_reader(request, data, startpos)
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56 if not data then
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57 if request.body then
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58 log("debug", "Connection closed, but we have data, calling callback...");
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59 request.callback(t_concat(request.body), request.code, request);
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60 elseif request.state ~= "completed" then
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61 -- Error.. connection was closed prematurely
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62 request.callback("connection-closed", 0, request);
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63 return;
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64 end
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65 destroy_request(request);
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66 request.body = nil;
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67 request.state = "completed";
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68 return;
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69 end
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70 if request.state == "body" and request.state ~= "completed" then
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71 log("debug", "Reading body...")
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72 if not request.body then request.body = {}; request.havebodylength, request.bodylength = 0, tonumber(request.responseheaders["content-length"]); end
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73 if startpos then
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74 data = data:sub(startpos, -1)
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75 end
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76 t_insert(request.body, data);
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77 if request.bodylength then
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78 request.havebodylength = request.havebodylength + #data;
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79 if request.havebodylength >= request.bodylength then
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80 -- We have the body
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81 log("debug", "Have full body, calling callback");
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82 if request.callback then
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83 request.callback(t_concat(request.body), request.code, request);
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84 end
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85 request.body = nil;
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86 request.state = "completed";
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87 else
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88 log("debug", "Have "..request.havebodylength.." bytes out of "..request.bodylength);
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89 end
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90 end
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91 elseif request.state == "headers" then
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92 log("debug", "Reading headers...")
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93 local pos = startpos;
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94 local headers, headers_complete = request.responseheaders;
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95 if not headers then
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96 headers = {};
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97 request.responseheaders = headers;
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98 end
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99 for line in data:sub(startpos, -1):gmatch("(.-)\r\n") do
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100 startpos = startpos + #line + 2;
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101 local k, v = line:match("(%S+): (.+)");
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102 if k and v then
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103 headers[k:lower()] = v;
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104 --log("debug", "Header: "..k:lower().." = "..v);
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105 elseif #line == 0 then
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106 headers_complete = true;
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107 break;
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108 else
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109 log("warn", "Unhandled header line: "..line);
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110 end
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111 end
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112 if not headers_complete then return; end
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113 -- Reached the end of the headers
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114 if not expectbody(request, request.code) then
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115 request.callback(nil, request.code, request);
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116 return;
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117 end
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118 request.state = "body";
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119 if #data > startpos then
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120 return request_reader(request, data, startpos);
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121 end
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122 elseif request.state == "status" then
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123 log("debug", "Reading status...")
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124 local http, code, text, linelen = data:match("^HTTP/(%S+) (%d+) (.-)\r\n()", startpos);
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125 code = tonumber(code);
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126 if not code then
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127 log("warn", "Invalid HTTP status line, telling callback then closing");
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Matthew Wild <mwild1@gmail.com>
parents: 2808
diff changeset
128 local ret = request.callback("invalid-status-line", 0, request);
1a7b5b775275 net.http: Close connection when invalid status line is received from the server
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parents: 2808
diff changeset
129 destroy_request(request);
1a7b5b775275 net.http: Close connection when invalid status line is received from the server
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parents: 2808
diff changeset
130 return ret;
616
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131 end
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132
633
fe1e01a06729 Fix nil status code for http request callbacks
Matthew Wild <mwild1@gmail.com>
parents: 628
diff changeset
133 request.code, request.responseversion = code, http;
616
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134
2807
8e2dba8904a7 net.http: Port commit 2f235c57d713 to net.http to fix headers in responses (thanks dersd)
Matthew Wild <mwild1@gmail.com>
parents: 2777
diff changeset
135 if request.onlystatus then
616
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136 if request.callback then
646
90da4c9b34b5 HTTP requests now have status code as a number instead of a string. Switched parameters on both http.request() and the callback to better match LuaSocket's http module
Matthew Wild <mwild1@gmail.com>
parents: 633
diff changeset
137 request.callback(nil, code, request);
616
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138 end
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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139 destroy_request(request);
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140 return;
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141 end
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142
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143 request.state = "headers";
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144
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diff changeset
145 if #data > linelen then
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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diff changeset
146 return request_reader(request, data, linelen);
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147 end
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parents:
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148 end
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149 end
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150
678
1859edec2237 Protected call for HTTP request callbacks, to catch errors
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parents: 677
diff changeset
151 local function handleerr(err) log("error", "Traceback[http]: %s: %s", tostring(err), debug_traceback()); end
646
90da4c9b34b5 HTTP requests now have status code as a number instead of a string. Switched parameters on both http.request() and the callback to better match LuaSocket's http module
Matthew Wild <mwild1@gmail.com>
parents: 633
diff changeset
152 function request(u, ex, callback)
616
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153 local req = url.parse(u);
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154
903
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
Matthew Wild <mwild1@gmail.com>
parents: 739
diff changeset
155 if not (req and req.host) then
923
c63f9bc45a85 Fixed: net/http.lua: HTTP request callback wasn't being called on some errors
Waqas Hussain <waqas20@gmail.com>
parents: 903
diff changeset
156 callback(nil, 0, req);
903
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
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parents: 739
diff changeset
157 return nil, "invalid-url";
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
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parents: 739
diff changeset
158 end
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
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parents: 739
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159
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
Matthew Wild <mwild1@gmail.com>
parents: 739
diff changeset
160 if not req.path then
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
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parents: 739
diff changeset
161 req.path = "/";
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
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parents: 739
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162 end
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
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163
616
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164 local custom_headers, body;
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165 local default_headers = { ["Host"] = req.host, ["User-Agent"] = "Prosody XMPP Server" }
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166
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167
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168 if req.userinfo then
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169 default_headers["Authorization"] = "Basic "..mime.b64(req.userinfo);
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170 end
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171
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172 if ex then
738
cf70342985df net.http: custom_headers -> headers
Matthew Wild <mwild1@gmail.com>
parents: 720
diff changeset
173 custom_headers = ex.headers;
616
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174 req.onlystatus = ex.onlystatus;
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175 body = ex.body;
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176 if body then
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
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177 req.method = "POST ";
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178 default_headers["Content-Length"] = tostring(#body);
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179 default_headers["Content-Type"] = "application/x-www-form-urlencoded";
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parents:
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180 end
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parents:
diff changeset
181 if ex.method then req.method = ex.method; end
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parents:
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182 end
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parents:
diff changeset
183
739
1def06cd9311 Port to new server.lua, quite some changes, but I believe everything to be working
Matthew Wild <mwild1@gmail.com>
parents: 738
diff changeset
184 req.handler, req.conn = server.wrapclient(socket.tcp(), req.host, req.port or 80, listener, "*a");
2130
828e161cdfc7 net.httpserver, net.http: Update for new net.server API (untested)
Matthew Wild <mwild1@gmail.com>
parents: 1522
diff changeset
185 req.write = function (...) return req.handler:write(...); end
616
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186 req.conn:settimeout(0);
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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187 local ok, err = req.conn:connect(req.host, req.port or 80);
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parents:
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188 if not ok and err ~= "timeout" then
903
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
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parents: 739
diff changeset
189 callback(nil, 0, req);
616
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190 return nil, err;
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parents:
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191 end
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
192
719
b1eb112478b8 net.http: Fix to send query part of URL to server
Matthew Wild <mwild1@gmail.com>
parents: 714
diff changeset
193 local request_line = { req.method or "GET", " ", req.path, " HTTP/1.1\r\n" };
b1eb112478b8 net.http: Fix to send query part of URL to server
Matthew Wild <mwild1@gmail.com>
parents: 714
diff changeset
194
b1eb112478b8 net.http: Fix to send query part of URL to server
Matthew Wild <mwild1@gmail.com>
parents: 714
diff changeset
195 if req.query then
b1eb112478b8 net.http: Fix to send query part of URL to server
Matthew Wild <mwild1@gmail.com>
parents: 714
diff changeset
196 t_insert(request_line, 4, "?");
b1eb112478b8 net.http: Fix to send query part of URL to server
Matthew Wild <mwild1@gmail.com>
parents: 714
diff changeset
197 t_insert(request_line, 5, req.query);
b1eb112478b8 net.http: Fix to send query part of URL to server
Matthew Wild <mwild1@gmail.com>
parents: 714
diff changeset
198 end
b1eb112478b8 net.http: Fix to send query part of URL to server
Matthew Wild <mwild1@gmail.com>
parents: 714
diff changeset
199
b1eb112478b8 net.http: Fix to send query part of URL to server
Matthew Wild <mwild1@gmail.com>
parents: 714
diff changeset
200 req.write(t_concat(request_line));
616
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
201 local t = { [2] = ": ", [4] = "\r\n" };
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
202 if custom_headers then
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
203 for k, v in pairs(custom_headers) do
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
204 t[1], t[3] = k, v;
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
205 req.write(t_concat(t));
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
206 default_headers[k] = nil;
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
207 end
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
208 end
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
209
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
210 for k, v in pairs(default_headers) do
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
211 t[1], t[3] = k, v;
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
212 req.write(t_concat(t));
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
213 default_headers[k] = nil;
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
214 end
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
215 req.write("\r\n");
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
216
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
217 if body then
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
218 req.write(body);
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
219 end
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
220
720
8f22e9fb2291 net.http: Don't log content from server
Matthew Wild <mwild1@gmail.com>
parents: 719
diff changeset
221 req.callback = function (content, code, request) log("debug", "Calling callback, status %s", code or "---"); return select(2, xpcall(function () return callback(content, code, request) end, handleerr)); end
616
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
222 req.reader = request_reader;
678
1859edec2237 Protected call for HTTP request callbacks, to catch errors
Matthew Wild <mwild1@gmail.com>
parents: 677
diff changeset
223 req.state = "status";
616
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
224
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
225 listener.register_request(req.handler, req);
619
6d720aba51cb Oops, don't call server.loop() because we'll be running inside the server
Matthew Wild <mwild1@gmail.com>
parents: 618
diff changeset
226
616
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
227 return req;
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
228 end
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
229
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
230 function destroy_request(request)
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
231 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
Matthew Wild <mwild1@gmail.com>
parents: 2672
diff changeset
232 request.conn = nil;
61ae351c19b5 net.http: destroy_request(): Remove update for new server API, pass request.handler instead of request.conn to ondisconnect
Matthew Wild <mwild1@gmail.com>
parents: 2672
diff changeset
233 request.handler:close()
61ae351c19b5 net.http: destroy_request(): Remove update for new server API, pass request.handler instead of request.conn to ondisconnect
Matthew Wild <mwild1@gmail.com>
parents: 2672
diff changeset
234 listener.ondisconnect(request.handler, "closed");
616
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
235 end
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
236 end
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
237
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
238 _M.urlencode = urlencode;
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
239
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
240 return _M;