prosody
368b092bf4bf
net/http/parser.lua

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net/http/parser.lua @ 9340:368b092bf4bf

mod_storage_memory: Fix saving of remaining items during deletion All data is compiled into functions that return new copies in order to prevent mutation of stored data. This has downsides. Also an ugly hack.
author Kim Alvefur <zash@zash.se>
date Sat, 22 Sep 2018 16:03:50 +0200
parent 8045:55a56dc935f2
child 10540:375d31225d53
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4631
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
1 local tonumber = tonumber;
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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2 local assert = assert;
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3ae247af68f4 net.http.parser: Buffer into a table to reduce GC pressure, collapse to string when needed (fixes #603)
Kim Alvefur <zash@zash.se>
parents: 6523
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3 local t_insert, t_concat = table.insert, table.concat;
4866
d54999db3aa1 net.http.parser: Do full URL decoding and parsing (e.g. adds request.url.query when present)
Matthew Wild <mwild1@gmail.com>
parents: 4716
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4 local url_parse = require "socket.url".parse;
5460
274c10668fe8 net.http.parser: Depend on util.http instead of net.http for urlencode
Matthew Wild <mwild1@gmail.com>
parents: 5323
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5 local urldecode = require "util.http".urldecode;
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6
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6eeb142a8073 mod_http_files, net.http.parser: Move path normalization to net.http.parser so that all modules can benefit
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7 local function preprocess_path(path)
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61c47d26481d net.http.parser: Fix syntax error introduced in c5edb08fc7cb.
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8 path = urldecode((path:gsub("//+", "/")));
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6eeb142a8073 mod_http_files, net.http.parser: Move path normalization to net.http.parser so that all modules can benefit
Matthew Wild <mwild1@gmail.com>
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9 if path:sub(1,1) ~= "/" then
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10 path = "/"..path;
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11 end
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12 local level = 0;
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parents: 4712
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13 for component in path:gmatch("([^/]+)/") do
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parents: 4712
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14 if component == ".." then
6eeb142a8073 mod_http_files, net.http.parser: Move path normalization to net.http.parser so that all modules can benefit
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parents: 4712
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15 level = level - 1;
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16 elseif component ~= "." then
6eeb142a8073 mod_http_files, net.http.parser: Move path normalization to net.http.parser so that all modules can benefit
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17 level = level + 1;
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18 end
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Matthew Wild <mwild1@gmail.com>
parents: 4712
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19 if level < 0 then
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20 return nil;
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21 end
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22 end
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23 return path;
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24 end
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Matthew Wild <mwild1@gmail.com>
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25
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fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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26 local httpstream = {};
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27
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28 function httpstream.new(success_cb, error_cb, parser_type, options_cb)
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29 local client = true;
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30 if not parser_type or parser_type == "server" then client = false; else assert(parser_type == "client", "Invalid parser type"); end
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31 local buf, buflen, buftable = {}, 0, true;
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65bf55fdf971 net.http.parser: Allow limits to be configurable via options callback
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32 local bodylimit = tonumber(options_cb and options_cb().body_size_limit) or 10*1024*1024;
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33 local buflimit = tonumber(options_cb and options_cb().buffer_size_limit) or bodylimit * 2;
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111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
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34 local chunked, chunk_size, chunk_start;
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35 local state = nil;
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36 local packet;
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37 local len;
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38 local have_body;
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39 local error;
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40 return {
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a15ce0014ac9 net.http.parser: Remove unused argument [luacheck]
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41 feed = function(_, data)
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42 if error then return nil, "parse has failed"; end
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43 if not data then -- EOF
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44 if buftable then buf, buftable = t_concat(buf), false; end
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45 if state and client and not len then -- reading client body until EOF
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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46 packet.body = buf;
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47 success_cb(packet);
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48 elseif buf ~= "" then -- unexpected EOF
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55a56dc935f2 net.http: Pass error all the way to callback
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49 error = true; return error_cb("unexpected-eof");
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50 end
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51 return;
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52 end
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53 if buftable then
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54 t_insert(buf, data);
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55 else
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56 buf = { buf, data };
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57 buftable = true;
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58 end
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59 buflen = buflen + #data;
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3dc52f1778db net.http.parser: Add a limit on maximum buffer size, default to 20M
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60 if buflen > buflimit then error = true; return error_cb("max-buffer-size-exceeded"); end
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61 while buflen > 0 do
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62 if state == nil then -- read request
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63 if buftable then buf, buftable = t_concat(buf), false; end
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fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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64 local index = buf:find("\r\n\r\n", nil, true);
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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65 if not index then return; end -- not enough data
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66 local method, path, httpversion, status_code, reason_phrase;
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67 local first_line;
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68 local headers = {};
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69 for line in buf:sub(1,index+1):gmatch("([^\r\n]+)\r\n") do -- parse request
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70 if first_line then
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71 local key, val = line:match("^([^%s:]+): *(.*)$");
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72 if not key then error = true; return error_cb("invalid-header-line"); end -- TODO handle multi-line and invalid headers
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73 key = key:lower();
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74 headers[key] = headers[key] and headers[key]..","..val or val;
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75 else
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76 first_line = line;
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77 if client then
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78 httpversion, status_code, reason_phrase = line:match("^HTTP/(1%.[01]) (%d%d%d) (.*)$");
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79 status_code = tonumber(status_code);
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80 if not status_code then error = true; return error_cb("invalid-status-line"); end
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81 have_body = not
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82 ( (options_cb and options_cb().method == "HEAD")
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83 or (status_code == 204 or status_code == 304 or status_code == 301)
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84 or (status_code >= 100 and status_code < 200) );
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85 else
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86 method, path, httpversion = line:match("^(%w+) (%S+) HTTP/(1%.[01])$");
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87 if not method then error = true; return error_cb("invalid-status-line"); end
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88 end
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89 end
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90 end
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01f7522049fb net.http.parser: Abort if no status line is received.
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91 if not first_line then error = true; return error_cb("invalid-status-line"); end
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92 chunked = have_body and headers["transfer-encoding"] == "chunked";
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93 len = tonumber(headers["content-length"]); -- TODO check for invalid len
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94 if len and len > bodylimit then error = true; return error_cb("content-length-limit-exceeded"); end
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95 if client then
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96 -- FIXME handle '100 Continue' response (by skipping it)
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97 if not have_body then len = 0; end
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98 packet = {
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99 code = status_code;
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100 httpversion = httpversion;
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101 headers = headers;
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102 body = have_body and "" or nil;
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103 -- COMPAT the properties below are deprecated
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104 responseversion = httpversion;
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105 responseheaders = headers;
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106 };
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107 else
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108 local parsed_url;
c85c348253bd net.http.parser: Skip url.parse when we don't have a full URL (also fixes traceback on paths starting with '//').
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109 if path:byte() == 47 then -- starts with /
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110 local _path, _query = path:match("([^?]*).?(.*)");
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111 if _query == "" then _query = nil; end
c85c348253bd net.http.parser: Skip url.parse when we don't have a full URL (also fixes traceback on paths starting with '//').
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112 parsed_url = { path = _path, query = _query };
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113 else
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114 parsed_url = url_parse(path);
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4c30f638ff55 net.http.parser: Ensure full URL in status line contains a path.
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115 if not(parsed_url and parsed_url.path) then error = true; return error_cb("invalid-url"); end
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116 end
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d54999db3aa1 net.http.parser: Do full URL decoding and parsing (e.g. adds request.url.query when present)
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117 path = preprocess_path(parsed_url.path);
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45bb378a4a98 net.http.parser: Keep the Host header no host is present in the URI
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parents: 4866
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118 headers.host = parsed_url.host or headers.host;
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4fc99f1b7570 net.http.parser: Handle full URLs in status line.
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parents: 4631
diff changeset
119
4631
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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120 len = len or 0;
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121 packet = {
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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122 method = method;
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d54999db3aa1 net.http.parser: Do full URL decoding and parsing (e.g. adds request.url.query when present)
Matthew Wild <mwild1@gmail.com>
parents: 4716
diff changeset
123 url = parsed_url;
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fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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124 path = path;
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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125 httpversion = httpversion;
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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126 headers = headers;
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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127 body = nil;
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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128 };
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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129 end
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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130 buf = buf:sub(index + 4);
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parents: 6523
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131 buflen = #buf;
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fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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132 state = true;
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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133 end
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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134 if state then -- read body
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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135 if client then
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
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136 if chunked then
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6879a220917b net.http.parser: Don't collapse buffer when expecting a chunk and not enough data has been received
Kim Alvefur <zash@zash.se>
parents: 7634
diff changeset
137 if chunk_start and buflen - chunk_start - 2 < chunk_size then
6879a220917b net.http.parser: Don't collapse buffer when expecting a chunk and not enough data has been received
Kim Alvefur <zash@zash.se>
parents: 7634
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138 return;
6879a220917b net.http.parser: Don't collapse buffer when expecting a chunk and not enough data has been received
Kim Alvefur <zash@zash.se>
parents: 7634
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139 end -- not enough data
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3ae247af68f4 net.http.parser: Buffer into a table to reduce GC pressure, collapse to string when needed (fixes #603)
Kim Alvefur <zash@zash.se>
parents: 6523
diff changeset
140 if buftable then buf, buftable = t_concat(buf), false; end
5463
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
141 if not buf:find("\r\n", nil, true) then
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
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diff changeset
142 return;
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
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143 end -- not enough data
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
144 if not chunk_size then
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
145 chunk_size, chunk_start = buf:match("^(%x+)[^\r\n]*\r\n()");
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
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146 chunk_size = chunk_size and tonumber(chunk_size, 16);
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
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147 if not chunk_size then error = true; return error_cb("invalid-chunk-size"); end
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fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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parents:
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148 end
5463
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Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
149 if chunk_size == 0 and buf:find("\r\n\r\n", chunk_start-2, true) then
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
150 state, chunk_size = nil, nil;
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
151 buf = buf:gsub("^.-\r\n\r\n", ""); -- This ensure extensions and trailers are stripped
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
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parents: 5462
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152 success_cb(packet);
7575
3ae247af68f4 net.http.parser: Buffer into a table to reduce GC pressure, collapse to string when needed (fixes #603)
Kim Alvefur <zash@zash.se>
parents: 6523
diff changeset
153 elseif buflen - chunk_start - 2 >= chunk_size then -- we have a chunk
5475
c2c9f07c5d6a net.http.parser: Fix off-by-one error in chunked encoding parser
Matthew Wild <mwild1@gmail.com>
parents: 5463
diff changeset
154 packet.body = packet.body..buf:sub(chunk_start, chunk_start + (chunk_size-1));
5463
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
155 buf = buf:sub(chunk_start + chunk_size + 2);
7634
b1132d74f54c net.http.parser: Fix missing buffer length adjustment when parsing chunked streams
Kim Alvefur <zash@zash.se>
parents: 7581
diff changeset
156 buflen = buflen - (chunk_start + chunk_size + 2 - 1);
5463
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
157 chunk_size, chunk_start = nil, nil;
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
158 else -- Partial chunk remaining
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
159 break;
111953bfe767 net.http.parser: Fix chunked encoding response parsing, and make it more robust
Matthew Wild <mwild1@gmail.com>
parents: 5462
diff changeset
160 end
7575
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Kim Alvefur <zash@zash.se>
parents: 6523
diff changeset
161 elseif len and buflen >= len then
3ae247af68f4 net.http.parser: Buffer into a table to reduce GC pressure, collapse to string when needed (fixes #603)
Kim Alvefur <zash@zash.se>
parents: 6523
diff changeset
162 if buftable then buf, buftable = t_concat(buf), false; end
6523
63d3126b75f1 net.http.parser: Fix whitespace/indentation
Matthew Wild <mwild1@gmail.com>
parents: 6522
diff changeset
163 if packet.code == 101 then
7575
3ae247af68f4 net.http.parser: Buffer into a table to reduce GC pressure, collapse to string when needed (fixes #603)
Kim Alvefur <zash@zash.se>
parents: 6523
diff changeset
164 packet.body, buf, buflen, buftable = buf, {}, 0, true;
6523
63d3126b75f1 net.http.parser: Fix whitespace/indentation
Matthew Wild <mwild1@gmail.com>
parents: 6522
diff changeset
165 else
63d3126b75f1 net.http.parser: Fix whitespace/indentation
Matthew Wild <mwild1@gmail.com>
parents: 6522
diff changeset
166 packet.body, buf = buf:sub(1, len), buf:sub(len + 1);
7575
3ae247af68f4 net.http.parser: Buffer into a table to reduce GC pressure, collapse to string when needed (fixes #603)
Kim Alvefur <zash@zash.se>
parents: 6523
diff changeset
167 buflen = #buf;
6523
63d3126b75f1 net.http.parser: Fix whitespace/indentation
Matthew Wild <mwild1@gmail.com>
parents: 6522
diff changeset
168 end
4631
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
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parents:
diff changeset
169 state = nil; success_cb(packet);
5461
67b674f6a299 net.http.parser: Break when no more usable data in buffer (client part of e5ec60dfb202)
Matthew Wild <mwild1@gmail.com>
parents: 5460
diff changeset
170 else
67b674f6a299 net.http.parser: Break when no more usable data in buffer (client part of e5ec60dfb202)
Matthew Wild <mwild1@gmail.com>
parents: 5460
diff changeset
171 break;
4631
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
172 end
7575
3ae247af68f4 net.http.parser: Buffer into a table to reduce GC pressure, collapse to string when needed (fixes #603)
Kim Alvefur <zash@zash.se>
parents: 6523
diff changeset
173 elseif buflen >= len then
3ae247af68f4 net.http.parser: Buffer into a table to reduce GC pressure, collapse to string when needed (fixes #603)
Kim Alvefur <zash@zash.se>
parents: 6523
diff changeset
174 if buftable then buf, buftable = t_concat(buf), false; end
4631
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
175 packet.body, buf = buf:sub(1, len), buf:sub(len + 1);
7575
3ae247af68f4 net.http.parser: Buffer into a table to reduce GC pressure, collapse to string when needed (fixes #603)
Kim Alvefur <zash@zash.se>
parents: 6523
diff changeset
176 buflen = #buf;
4631
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
177 state = nil; success_cb(packet);
4910
e5ec60dfb202 net.http.parser: Break loop when no more usable data in buffer
Matthew Wild <mwild1@gmail.com>
parents: 4879
diff changeset
178 else
e5ec60dfb202 net.http.parser: Break loop when no more usable data in buffer
Matthew Wild <mwild1@gmail.com>
parents: 4879
diff changeset
179 break;
4631
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
180 end
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
181 end
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
182 end
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
183 end;
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
184 };
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
185 end
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
186
fc5d3b053454 net.http.{server|codes|parser}: Initial commit.
Waqas Hussain <waqas20@gmail.com>
parents:
diff changeset
187 return httpstream;