Mercurial > hg > nginx
view src/core/ngx_crc.h @ 7207:3d2b0b02bd3d
HTTP/2: push additional request headers (closes #1478).
The Accept-Encoding, Accept-Language, and User-Agent header fields
are now copied from the original request to pushed requests.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Thu, 15 Feb 2018 17:51:32 +0300 |
parents | d620f497c50f |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_CRC_H_INCLUDED_ #define _NGX_CRC_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> /* 32-bit crc16 */ static ngx_inline uint32_t ngx_crc(u_char *data, size_t len) { uint32_t sum; for (sum = 0; len; len--) { /* * gcc 2.95.2 x86 and icc 7.1.006 compile * that operator into the single "rol" opcode, * msvc 6.0sp2 compiles it into four opcodes. */ sum = sum >> 1 | sum << 31; sum += *data++; } return sum; } #endif /* _NGX_CRC_H_INCLUDED_ */