prosody
55f11a6806bc
net/http.lua

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net/http.lua @ 7651:55f11a6806bc

mod_bosh: Correctly handle requests arriving out of order (thanks Jitsi folk!)
author Matthew Wild <mwild1@gmail.com>
date Fri, 02 Sep 2016 21:57:22 +0100
parent 7520:fc6c24cb3599
child 7523:3c40b972260e
child 7792:0bc6c3704973
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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 b64 = require "util.encodings".base64.encode;
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10 local url = require "socket.url"
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11 local httpstream_new = require "net.http.parser".new;
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12 local util_http = require "util.http";
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13
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14 local ssl_available = pcall(require, "ssl");
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15
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16 local server = require "net.server"
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17
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18 local t_insert, t_concat = table.insert, table.concat;
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19 local pairs = pairs;
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20 local tonumber, tostring, xpcall, select, traceback =
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21 tonumber, tostring, xpcall, select, debug.traceback;
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22 local assert, error = assert, error
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24 local log = require "util.logger".init("http");
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25
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26 local _ENV = nil;
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28 local requests = {}; -- Open requests
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29
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30 local function make_id(req) return (tostring(req):match("%x+$")); end
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32 local listener = { default_port = 80, default_mode = "*a" };
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33
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34 function listener.onconnect(conn)
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35 local req = requests[conn];
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36 -- Send the request
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37 local request_line = { req.method or "GET", " ", req.path, " HTTP/1.1\r\n" };
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38 if req.query then
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39 t_insert(request_line, 4, "?"..req.query);
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40 end
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41
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42 conn:write(t_concat(request_line));
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43 local t = { [2] = ": ", [4] = "\r\n" };
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44 for k, v in pairs(req.headers) do
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45 t[1], t[3] = k, v;
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46 conn:write(t_concat(t));
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47 end
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48 conn:write("\r\n");
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49
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50 if req.body then
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51 conn:write(req.body);
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52 end
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53 end
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54
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55 function listener.onincoming(conn, data)
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56 local request = requests[conn];
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57
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58 if not request then
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59 log("warn", "Received response from connection %s with no request attached!", tostring(conn));
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60 return;
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61 end
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62
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63 if data and request.reader then
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64 request:reader(data);
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65 end
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66 end
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67
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68 function listener.ondisconnect(conn, err)
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69 local request = requests[conn];
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70 if request and request.conn then
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71 request:reader(nil, err);
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72 end
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73 requests[conn] = nil;
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74 end
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75
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76 function listener.ondetach(conn)
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77 requests[conn] = nil;
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78 end
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79
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80 local function destroy_request(request)
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81 if request.conn then
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82 request.conn = nil;
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83 request.handler:close()
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84 end
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85 end
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86
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87 local function request_reader(request, data, err)
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88 if not request.parser then
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89 local function error_cb(reason)
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90 if request.callback then
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91 request.callback(reason or "connection-closed", 0, 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
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97 if not data then
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98 error_cb(err);
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99 return;
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100 end
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101
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102 local function success_cb(r)
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103 if request.callback then
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104 request.callback(r.body, r.code, r, request);
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105 request.callback = nil;
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106 end
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107 destroy_request(request);
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108 end
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109 local function options_cb()
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110 return request;
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111 end
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112 request.parser = httpstream_new(success_cb, error_cb, "client", options_cb);
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113 end
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114 request.parser:feed(data);
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115 end
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116
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117 local function handleerr(err) log("error", "Traceback[http]: %s", traceback(tostring(err), 2)); end
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118 local function log_if_failed(id, ret, ...)
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119 if not ret then
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120 log("error", "Request '%s': error in callback: %s", id, tostring((...)));
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121 end
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122 return ...;
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123 end
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124
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125 local function request(u, ex, callback)
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126 local req = url.parse(u);
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127
903
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
Matthew Wild <mwild1@gmail.com>
parents: 739
diff changeset
128 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
129 callback(nil, 0, req);
903
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
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diff changeset
130 return nil, "invalid-url";
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131 end
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132
903
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parents: 739
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133 if not req.path then
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parents: 739
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134 req.path = "/";
6737d005a84a net.http: Don't throw error on invalid URLs. Fixes #56.
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parents: 739
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135 end
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136
7463
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Matthew Wild <mwild1@gmail.com>
parents: 6823
diff changeset
137 req.id = ex and ex.id or make_id(req);
3b6e7ce9431f net.http: Add request.id to every request object (can be overridden by providing ex.id)
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parents: 6823
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138
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parents: 4351
diff changeset
139 local method, headers, body;
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140
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Matthew Wild <mwild1@gmail.com>
parents: 5505
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141 local host, port = req.host, req.port;
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parents: 5505
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142 local host_header = host;
520671c3159c net.http: Include port number (when non-standard) in the Host header of outgoing requests, as per the HTTP RFC
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parents: 5505
diff changeset
143 if (port == "80" and req.scheme == "http")
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Matthew Wild <mwild1@gmail.com>
parents: 5505
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144 or (port == "443" and req.scheme == "https") then
520671c3159c net.http: Include port number (when non-standard) in the Host header of outgoing requests, as per the HTTP RFC
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parents: 5505
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145 port = nil;
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parents: 5505
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146 elseif port then
520671c3159c net.http: Include port number (when non-standard) in the Host header of outgoing requests, as per the HTTP RFC
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parents: 5505
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147 host_header = host_header..":"..port;
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parents: 5505
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148 end
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149
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150 headers = {
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151 ["Host"] = host_header;
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152 ["User-Agent"] = "Prosody XMPP Server";
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parents: 4351
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153 };
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154
616
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parents:
diff changeset
155 if req.userinfo then
4972
1777271a1ec0 net.http: Use base64 from util.encodings instead of luasocket
Kim Alvefur <zash@zash.se>
parents: 4865
diff changeset
156 headers["Authorization"] = "Basic "..b64(req.userinfo);
616
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parents:
diff changeset
157 end
4351
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parents: 4350
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158
616
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parents:
diff changeset
159 if ex then
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Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
160 req.onlystatus = ex.onlystatus;
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parents:
diff changeset
161 body = ex.body;
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parents:
diff changeset
162 if body then
4369
3578ff5d3674 net.http: Remove extra space after method in request status line for POST.
Waqas Hussain <waqas20@gmail.com>
parents: 4356
diff changeset
163 method = "POST";
4352
912a49b1c4e3 net.http, httpclient_listener: Move request sending from net.http to onconnect() handler, and add support for HTTPS requests to net.http
Matthew Wild <mwild1@gmail.com>
parents: 4351
diff changeset
164 headers["Content-Length"] = tostring(#body);
912a49b1c4e3 net.http, httpclient_listener: Move request sending from net.http to onconnect() handler, and add support for HTTPS requests to net.http
Matthew Wild <mwild1@gmail.com>
parents: 4351
diff changeset
165 headers["Content-Type"] = "application/x-www-form-urlencoded";
616
69bc5782b25e Non-blocking HTTP requests (adding net.http)
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parents:
diff changeset
166 end
4351
3f414091a008 net.http: Whitespace fixes
Matthew Wild <mwild1@gmail.com>
parents: 4350
diff changeset
167 if ex.method then method = ex.method; end
3f414091a008 net.http: Whitespace fixes
Matthew Wild <mwild1@gmail.com>
parents: 4350
diff changeset
168 if ex.headers then
3f414091a008 net.http: Whitespace fixes
Matthew Wild <mwild1@gmail.com>
parents: 4350
diff changeset
169 for k, v in pairs(ex.headers) do
3f414091a008 net.http: Whitespace fixes
Matthew Wild <mwild1@gmail.com>
parents: 4350
diff changeset
170 headers[k] = v;
3f414091a008 net.http: Whitespace fixes
Matthew Wild <mwild1@gmail.com>
parents: 4350
diff changeset
171 end
3f414091a008 net.http: Whitespace fixes
Matthew Wild <mwild1@gmail.com>
parents: 4350
diff changeset
172 end
616
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
173 end
5776
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Florian Zeitz <florob@babelmonkeys.de>
parents: 5714
diff changeset
174
7520
fc6c24cb3599 net.http: Add quotes around ids in log messages
Matthew Wild <mwild1@gmail.com>
parents: 7464
diff changeset
175 log("debug", "Making %s %s request '%s' to %s", req.scheme:upper(), method or "GET", req.id, (ex and ex.suppress_url and host_header) or u);
7464
3b7de72e58a9 net.http: Add log messages for requests, including their id (so "calling callback" and tracebacks can be traced back to their initial request)
Matthew Wild <mwild1@gmail.com>
parents: 7463
diff changeset
176
4352
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parents: 4351
diff changeset
177 -- Attach to request object
912a49b1c4e3 net.http, httpclient_listener: Move request sending from net.http to onconnect() handler, and add support for HTTPS requests to net.http
Matthew Wild <mwild1@gmail.com>
parents: 4351
diff changeset
178 req.method, req.headers, req.body = method, headers, body;
5776
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diff changeset
179
4352
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Matthew Wild <mwild1@gmail.com>
parents: 4351
diff changeset
180 local using_https = req.scheme == "https";
5448
cbe9fa2d3787 net.http: Throw error when connecting to a http:// URL without LuaSec available
Matthew Wild <mwild1@gmail.com>
parents: 5354
diff changeset
181 if using_https and not ssl_available then
cbe9fa2d3787 net.http: Throw error when connecting to a http:// URL without LuaSec available
Matthew Wild <mwild1@gmail.com>
parents: 5354
diff changeset
182 error("SSL not available, unable to contact https URL");
cbe9fa2d3787 net.http: Throw error when connecting to a http:// URL without LuaSec available
Matthew Wild <mwild1@gmail.com>
parents: 5354
diff changeset
183 end
5714
520671c3159c net.http: Include port number (when non-standard) in the Host header of outgoing requests, as per the HTTP RFC
Matthew Wild <mwild1@gmail.com>
parents: 5505
diff changeset
184 local port_number = port and tonumber(port) or (using_https and 443 or 80);
5776
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parents: 5714
diff changeset
185
5353
8c3f28f5c1c1 net.http: Allow passing an SSL context or options table to be used for HTTPS requests (thanks daurnimator)
Matthew Wild <mwild1@gmail.com>
parents: 4977
diff changeset
186 local sslctx = false;
8c3f28f5c1c1 net.http: Allow passing an SSL context or options table to be used for HTTPS requests (thanks daurnimator)
Matthew Wild <mwild1@gmail.com>
parents: 4977
diff changeset
187 if using_https then
6496
e4b998ffc922 certmanager, net.http: Disable SSLv3 by default
Matthew Wild <mwild1@gmail.com>
parents: 6380
diff changeset
188 sslctx = ex and ex.sslctx or { mode = "client", protocol = "sslv23", options = { "no_sslv2", "no_sslv3" } };
5353
8c3f28f5c1c1 net.http: Allow passing an SSL context or options table to be used for HTTPS requests (thanks daurnimator)
Matthew Wild <mwild1@gmail.com>
parents: 4977
diff changeset
189 end
8c3f28f5c1c1 net.http: Allow passing an SSL context or options table to be used for HTTPS requests (thanks daurnimator)
Matthew Wild <mwild1@gmail.com>
parents: 4977
diff changeset
190
6823
3b07f38d70f5 net/http: Use server.addclient
daurnimator <quae@daurnimator.com>
parents: 6780
diff changeset
191 local handler, conn = server.addclient(host, port_number, listener, "*a", sslctx)
3b07f38d70f5 net/http: Use server.addclient
daurnimator <quae@daurnimator.com>
parents: 6780
diff changeset
192 if not handler then
3b07f38d70f5 net/http: Use server.addclient
daurnimator <quae@daurnimator.com>
parents: 6780
diff changeset
193 callback(nil, 0, req);
3b07f38d70f5 net/http: Use server.addclient
daurnimator <quae@daurnimator.com>
parents: 6780
diff changeset
194 return nil, conn;
3b07f38d70f5 net/http: Use server.addclient
daurnimator <quae@daurnimator.com>
parents: 6780
diff changeset
195 end
3b07f38d70f5 net/http: Use server.addclient
daurnimator <quae@daurnimator.com>
parents: 6780
diff changeset
196 req.handler, req.conn = handler, conn
4352
912a49b1c4e3 net.http, httpclient_listener: Move request sending from net.http to onconnect() handler, and add support for HTTPS requests to net.http
Matthew Wild <mwild1@gmail.com>
parents: 4351
diff changeset
197 req.write = function (...) return req.handler:write(...); end
5776
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Florian Zeitz <florob@babelmonkeys.de>
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diff changeset
198
7464
3b7de72e58a9 net.http: Add log messages for requests, including their id (so "calling callback" and tracebacks can be traced back to their initial request)
Matthew Wild <mwild1@gmail.com>
parents: 7463
diff changeset
199 req.callback = function (content, code, request, response)
7520
fc6c24cb3599 net.http: Add quotes around ids in log messages
Matthew Wild <mwild1@gmail.com>
parents: 7464
diff changeset
200 log("debug", "Request '%s': Calling callback, status %s", req.id, code or "---");
7464
3b7de72e58a9 net.http: Add log messages for requests, including their id (so "calling callback" and tracebacks can be traced back to their initial request)
Matthew Wild <mwild1@gmail.com>
parents: 7463
diff changeset
201 return log_if_failed(req.id, xpcall(function () return callback(content, code, request, response) end, handleerr));
3b7de72e58a9 net.http: Add log messages for requests, including their id (so "calling callback" and tracebacks can be traced back to their initial request)
Matthew Wild <mwild1@gmail.com>
parents: 7463
diff changeset
202 end
616
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
203 req.reader = request_reader;
678
1859edec2237 Protected call for HTTP request callbacks, to catch errors
Matthew Wild <mwild1@gmail.com>
parents: 677
diff changeset
204 req.state = "status";
4351
3f414091a008 net.http: Whitespace fixes
Matthew Wild <mwild1@gmail.com>
parents: 4350
diff changeset
205
4557
2abe4e541d52 net.http, httpclient_listener: Merge listener into net.http
Matthew Wild <mwild1@gmail.com>
parents: 4471
diff changeset
206 requests[req.handler] = req;
616
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
207 return req;
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
208 end
69bc5782b25e Non-blocking HTTP requests (adding net.http)
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
209
6780
647adfd8f738 net.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6501
diff changeset
210 return {
647adfd8f738 net.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6501
diff changeset
211 request = request;
647adfd8f738 net.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6501
diff changeset
212
647adfd8f738 net.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6501
diff changeset
213 -- COMPAT
647adfd8f738 net.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6501
diff changeset
214 urlencode = util_http.urlencode;
647adfd8f738 net.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6501
diff changeset
215 urldecode = util_http.urldecode;
647adfd8f738 net.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6501
diff changeset
216 formencode = util_http.formencode;
647adfd8f738 net.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6501
diff changeset
217 formdecode = util_http.formdecode;
647adfd8f738 net.*: Remove use of module() function
Kim Alvefur <zash@zash.se>
parents: 6501
diff changeset
218 };