text: --- net/socket/tcp_socket_posix.cc.orig	2019-03-17 15:46:01 UTC
  +++ net/socket/tcp_socket_posix.cc
  @@ -88,6 +88,17 @@ bool SetTCPKeepAlive(int fd, bool enable, int delay) {
       PLOG(ERROR) << "Failed to set TCP_KEEPALIVE on fd: " << fd;
       return false;
     }
  +#elif defined(OS_BSD)
  +  // Set seconds until first TCP keep alive.
  +  if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, &delay, sizeof(delay))) {
  +    PLOG(ERROR) << "Failed to set TCP_KEEPIDLE on fd: " << fd;
  +    return false;
  +  }
  +  // Set seconds between TCP keep alives.
  +  if (setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL, &delay, sizeof(delay))) {
  +    PLOG(ERROR) << "Failed to set TCP_KEEPINTVL on fd: " << fd;
  +    return false;
  +  }
   #endif
     return true;
   }
  