Upstream: don't consider default_port when matching upstreams. The only thing that default_port comparison did in the current code is prevented implicit upstreams to the same address/port from being aliased for http and https, e.g.: proxy_pass http://10.0.0.1:12345; proxy_pass https://10.0.0.1:12345; This is inconsistent because it doesn't work for a similar case with uswgi_pass: uwsgi_pass uwsgi://10.0.0.1:12345; uwsgi_pass suwsgi://10.0.0.1:12345; or with an explicit upstream: upstream u { server 10.0.0.1:12345; } proxy_pass http://u; proxy_pass https://u; Before c9059bd5445b, default_port comparison was needed to differentiate implicit upstreams in proxy_pass http://example.com; and proxy_pass https://example.com; as u->port was not set.

/*
 * 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_ */