view auto/lib/md5/conf @ 6556:654d2dae97d3

HTTP/2: the "421 Misdirected Request" response (closes #848). Since 4fbef397c753 nginx rejects with the 400 error any attempts of requesting different host over the same connection, if the relevant virtual server requires verification of a client certificate. While requesting hosts other than negotiated isn't something legal in HTTP/1.x, the HTTP/2 specification explicitly permits such requests for connection reuse and has introduced a special response code 421. According to RFC 7540 Section 9.1.2 this code can be sent by a server that is not configured to produce responses for the combination of scheme and authority that are included in the request URI. And the client may retry the request over a different connection. Now this code is used for requests that aren't authorized in current connection. After receiving the 421 response a client will be able to open a new connection, provide the required certificate and retry the request. Unfortunately, not all clients currently are able to handle it well. Notably Chrome just shows an error, while at least the latest version of Firefox retries the request over a new connection.
author Valentin Bartenev <vbart@nginx.com>
date Fri, 20 May 2016 18:41:17 +0300
parents 78f8ac479735
children
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# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


if [ $MD5 != NONE ]; then

    if grep MD5_Init $MD5/md5.h 2>&1 >/dev/null; then
        # OpenSSL md5
        OPENSSL_MD5=YES
        have=NGX_HAVE_OPENSSL_MD5 . auto/have
        have=NGX_OPENSSL_MD5 . auto/have
    else
        # rsaref md5
        OPENSSL_MD5=NO
    fi

    have=NGX_HAVE_MD5 . auto/have
    CORE_INCS="$CORE_INCS $MD5"

    case "$NGX_CC_NAME" in

        msvc | owc | bcc)
            LINK_DEPS="$LINK_DEPS $MD5/md5.lib"
            CORE_LIBS="$CORE_LIBS $MD5/md5.lib"
        ;;

        icc)
            LINK_DEPS="$LINK_DEPS $MD5/libmd5.a"

            # to allow -ipo optimization we link with the *.o but not library
            CORE_LIBS="$CORE_LIBS $MD5/md5_dgst.o"

            if [ $MD5_ASM = YES ]; then
                CORE_LIBS="$CORE_LIBS $MD5/asm/mx86-elf.o"
            fi
        ;;

        *)
            LINK_DEPS="$LINK_DEPS $MD5/libmd5.a"
            CORE_LIBS="$CORE_LIBS $MD5/libmd5.a"
            #CORE_LIBS="$CORE_LIBS -L $MD5 -lmd5"
        ;;

    esac

else

    if [ "$NGX_PLATFORM" != win32 ]; then

            MD5=NO

            # FreeBSD, Solaris 10

            ngx_feature="md5 in system md library"
            ngx_feature_name=NGX_HAVE_MD5
            ngx_feature_run=no
            ngx_feature_incs="#include <md5.h>"
            ngx_feature_path=
            ngx_feature_libs="-lmd"
            ngx_feature_test="MD5_CTX md5; MD5Init(&md5)"
            . auto/feature

            ngx_md5_lib="system md"

        if [ $ngx_found = no ]; then

            # Solaris 8/9

            ngx_feature="md5 in system md5 library"
            ngx_feature_libs="-lmd5"
            . auto/feature

            ngx_md5_lib="system md5"
        fi

        if [ $ngx_found = no ]; then

            # OpenSSL crypto library

            ngx_feature="md5 in system OpenSSL crypto library"
            ngx_feature_name="NGX_OPENSSL_MD5"
            ngx_feature_incs="#include <openssl/md5.h>"
            ngx_feature_libs="-lcrypto"
            ngx_feature_test="MD5_CTX md5; MD5_Init(&md5)"
            . auto/feature

            ngx_md5_lib="system crypto"

            if [ $ngx_found = yes ]; then
                have=NGX_HAVE_OPENSSL_MD5_H . auto/have
                have=NGX_HAVE_MD5 . auto/have
            fi
        fi

        if [ $ngx_found = yes ]; then
            CORE_LIBS="$CORE_LIBS $ngx_feature_libs"
            MD5=YES
            MD5_LIB=$ngx_md5_lib
        fi
    fi

fi