Function has_proxy_protocol_header

sql/proxy_protocol.cc:155–163

bool has_proxy_protocol_header(NET *net)
{
  compile_time_assert(NET_HEADER_SIZE < sizeof(PROXY_PROTOCOL_V1_SIGNATURE));
  compile_time_assert(NET_HEADER_SIZE < sizeof(PROXY_PROTOCOL_V2_SIGNATURE));

  const uchar *preread_bytes= net->buff + net->where_b;
  return !memcmp(preread_bytes, PROXY_PROTOCOL_V1_SIGNATURE, NET_HEADER_SIZE)||
      !memcmp(preread_bytes, PROXY_PROTOCOL_V2_SIGNATURE, NET_HEADER_SIZE);
}


/**