Created
July 16, 2014 16:02
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Http Parser Code
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#include "HttpParse.hpp" | |
#include <cstdint> | |
#include <vector> | |
namespace { | |
static constexpr size_t MaximumHeaderSize = 8 * 1024; | |
/// {@ | |
template <typename _Tp> | |
static inline uint32_t | |
castedString4(const _Tp& data) | |
{ | |
return (*(data + 3) << 24) | |
| (*(data + 2) << 16) | |
| (*(data + 1) << 8) | |
| (*(data + 0) << 0); | |
} | |
template <typename _Tp> | |
static inline uint64_t | |
castedString8(const _Tp& data) | |
{ | |
return (*(data + 7) << (2 * 7)) | |
| (*(data + 6) << (2 * 6)) | |
| (*(data + 5) << (2 * 5)) | |
| (*(data + 4) << (2 * 4)) | |
| (*(data + 3) << (2 * 3)) | |
| (*(data + 2) << (2 * 2)) | |
| (*(data + 1) << (2 * 1)) | |
| (*(data + 0) << (2 * 0)); | |
} | |
template <typename _Tp> | |
static constexpr uint32_t | |
exprString4(const _Tp& data) | |
{ | |
static_assert(sizeof(data) == 4 + 1, "Non-terminated expression"); | |
return (*(data + 3) << 24) | |
| (*(data + 2) << 16) | |
| (*(data + 1) << 8) | |
| (*(data + 0) << 0); | |
} | |
template <typename _Tp> | |
static constexpr uint64_t | |
exprString8(const _Tp& data) | |
{ | |
static_assert(sizeof(data) == 8 + 1, "Non-terminated expression"); | |
return (*(data + 7) << (2 * 7)) | |
| (*(data + 6) << (2 * 6)) | |
| (*(data + 5) << (2 * 5)) | |
| (*(data + 4) << (2 * 4)) | |
| (*(data + 3) << (2 * 3)) | |
| (*(data + 2) << (2 * 2)) | |
| (*(data + 1) << (2 * 1)) | |
| (*(data + 0) << (2 * 0)); | |
} | |
/// @} | |
enum HTTP_Version { | |
HTTP_UNDEFINED = 0, | |
HTTP_1_0 = exprString8("HTTP/1.0"), | |
HTTP_1_1 = exprString8("HTTP/1.1"), | |
}; | |
enum DateSpecification { | |
DATE_UNDEFINED = 0, | |
RFC_822, | |
RFC_850, | |
ANSI_C, | |
}; | |
template <typename _Tp> | |
DateSpecification | |
dateSpecification(const _Tp& data) | |
{ | |
switch (castedString4(data)) { | |
case exprString4("Sun,"): | |
case exprString4("Mon,"): | |
case exprString4("Tue,"): | |
case exprString4("Wed,"): | |
case exprString4("Thu,"): | |
case exprString4("Fri,"): | |
case exprString4("Sat,"): | |
return DateSpecification::RFC_822; | |
case exprString4("Sund"): | |
case exprString4("Mond"): | |
case exprString4("Tues"): | |
case exprString4("Wedn"): | |
case exprString4("Thur"): | |
case exprString4("Frid"): | |
case exprString4("Satu"): | |
return DateSpecification::RFC_850; | |
case exprString4("Sun "): | |
case exprString4("Mon "): | |
case exprString4("Tue "): | |
case exprString4("Wed "): | |
case exprString4("Thu "): | |
case exprString4("Fri "): | |
case exprString4("Sat "): | |
return DateSpecification::ANSI_C; | |
default: | |
return DateSpecification::DATE_UNDEFINED; | |
} | |
__builtin_unreachable(); | |
} | |
} // ns | |
HttpRequest | |
HttpRequest::FromSocket(int sock) | |
{ | |
uint8_t* head = new uint8_t[MaximumHeaderSize]; | |
uint8_t* tail = head; | |
__m128i cr = _mm_set1_epi8('\r'); | |
__m128i lf = _mm_set1_epi8('\n'); | |
memset(head, '\0', MaximumHeaderSize); | |
while (true) { | |
ssize_t offset = read(sock, | |
tail, | |
MaximumHeaderSize - (tail - head)); | |
if (offset < 0) { | |
assert(1 == 0); | |
} else { | |
tail += offset; | |
} | |
__m128i pt = _mm_load_si128((__m128i*) | |
} | |
} | |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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#ifndef __HTTP_PARSE_HPP | |
#define __HTTP_PARSE_HPP | |
class HttpRequest { | |
public: | |
static HttpRequest FromSocket(int sock); | |
}; | |
#endif //__HTTP_PARSE_HPP |
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