prosody
bd7699a6d536
util/httpstream.lua

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util/httpstream.lua @ 3495:bd7699a6d536

util.httpstream: Removed unused variables.
author Waqas Hussain <waqas20@gmail.com>
date Fri, 17 Sep 2010 03:52:11 +0500
parent 3494:0f185563a4e4
child 3496:9408d1e10e17
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
3494
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1
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2 local coroutine = coroutine;
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3 local tonumber = tonumber;
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4
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5 local deadroutine = coroutine.create(function() end);
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6 coroutine.resume(deadroutine);
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7
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8 module("httpstream")
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9
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10 local function parser(data, success_cb)
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11 local function readline()
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12 if not data then coroutine.yield("Unexpected EOF"); end
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13 local pos, line = (data:find("\r\n", nil, true));
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14 if not pos then
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15 local newdata = coroutine.yield();
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16 if not newdata then data = nil; coroutine.yield("Unexpected EOF"); end
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17 data = data..newdata;
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18 return readline();
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19 end
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20 line, data = data:sub(1, pos-1), data:sub(pos+2);
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21 return line;
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22 end
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23 local function readlength(n)
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24 if not data then coroutine.yield("Unexpected EOF"); end
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25 while #data < n do
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26 local newdata = coroutine.yield();
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27 if not newdata then data = nil; coroutine.yield("Unexpected EOF"); end
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28 data = data..newdata;
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29 end
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30 local r = data:sub(1, n);
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31 data = data:sub(n + 1);
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32 return r;
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33 end
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34
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35 while true do
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36 -- read status line
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37 local status_line = readline();
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38 local method, path, httpversion = status_line:match("^(%S+)%s+(%S+)%s+HTTP/(%S+)$");
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39 if not method then coroutine.yield("invalid-status-line"); end
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40 -- TODO parse url
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41
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42 local headers = {}; -- read headers
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43 while true do
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44 local line = readline();
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45 if line == "" then break; end -- headers done
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46 local key, val = line:match("^([^%s:]+): *(.*)$");
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47 if not key then coroutine.yield("invalid-header-line"); end -- TODO handle multi-line and invalid headers
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48 key = key:lower();
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49 headers[key] = headers[key] and headers[key]..","..val or val;
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50 end
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51
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52 -- read body
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53 local len = tonumber(headers["content-length"]);
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54 len = len or 0; -- TODO check for invalid len
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55 local body = readlength(len);
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56
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57 success_cb({
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58 method = method;
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59 path = path;
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60 httpversion = httpversion;
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61 headers = headers;
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62 body = body;
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63 });
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64 end
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65 end
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66
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67 function new(success_cb, error_cb)
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68 local co = coroutine.create(parser);
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69 return {
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70 feed = function(self, data)
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71 local success, result = coroutine.resume(co, data, success_cb);
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72 if result then
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73 if result.method then
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74 success_cb(result);
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75 else -- error
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76 error_cb(result);
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77 co = deadroutine;
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78 end
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79 end
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80 end;
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81 };
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82 end
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83
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84 return _M;