83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
/*
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* IXWebSocketHttpHeaders.h
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* Author: Benjamin Sergeant
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* Copyright (c) 2018 Machine Zone, Inc. All rights reserved.
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*/
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#include "IXWebSocketHttpHeaders.h"
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#include "IXSocket.h"
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#include <algorithm>
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#include <locale>
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namespace ix
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{
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bool CaseInsensitiveLess::NocaseCompare::operator()(const unsigned char& c1,
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const unsigned char& c2) const
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{
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#ifdef _WIN32
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return std::tolower(c1, std::locale()) < std::tolower(c2, std::locale());
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#else
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return std::tolower(c1) < std::tolower(c2);
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#endif
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}
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bool CaseInsensitiveLess::operator()(const std::string& s1, const std::string& s2) const
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{
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return std::lexicographical_compare(s1.begin(),
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s1.end(), // source range
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s2.begin(),
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s2.end(), // dest range
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NocaseCompare()); // comparison
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}
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std::pair<bool, WebSocketHttpHeaders> parseHttpHeaders(
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std::shared_ptr<Socket> socket, const CancellationRequest& isCancellationRequested)
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{
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WebSocketHttpHeaders headers;
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char line[1024];
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int i;
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while (true)
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{
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int colon = 0;
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for (i = 0; i < 2 || (i < 1023 && line[i - 2] != '\r' && line[i - 1] != '\n'); ++i)
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{
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if (!socket->readByte(line + i, isCancellationRequested))
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{
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return std::make_pair(false, headers);
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}
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if (line[i] == ':' && colon == 0)
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{
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colon = i;
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}
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}
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if (line[0] == '\r' && line[1] == '\n')
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{
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break;
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}
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// line is a single header entry. split by ':', and add it to our
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// header map. ignore lines with no colon.
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if (colon > 0)
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{
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line[i] = '\0';
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std::string lineStr(line);
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// colon is ':', colon+1 is ' ', colon+2 is the start of the value.
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// i is end of string (\0), i-colon is length of string minus key;
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// subtract 1 for '\0', 1 for '\n', 1 for '\r',
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// 1 for the ' ' after the ':', and total is -4
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std::string name(lineStr.substr(0, colon));
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std::string value(lineStr.substr(colon + 2, i - colon - 4));
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headers[name] = value;
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}
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}
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return std::make_pair(true, headers);
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}
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} // namespace ix
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