SSL: moved c->ssl->handshaked check in server name callback. Server name callback is always called by OpenSSL, even if server_name extension is not present in ClientHello. As such, checking c->ssl->handshaked before the SSL_get_servername() result should help to more effectively prevent renegotiation in OpenSSL 1.1.0 - 1.1.0g, where neither SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS nor SSL_OP_NO_RENEGOTIATION is available.

/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#include <ngx_config.h>
#include <ngx_core.h>


int
ngx_nonblocking(ngx_socket_t s)
{
    unsigned long  nb = 1;

    return ioctlsocket(s, FIONBIO, &nb);
}


int
ngx_blocking(ngx_socket_t s)
{
    unsigned long  nb = 0;

    return ioctlsocket(s, FIONBIO, &nb);
}


int
ngx_tcp_push(ngx_socket_t s)
{
    return 0;
}