int32_t CoreUDPHandler::send(BinStream& bin_strm, const Inet_Addr& remote_addr)
{
int32_t rc = sock_dgram_.send(bin_strm.get_rptr(), bin_strm.data_size(), remote_addr);
if(rc < 0)
{
if(XEAGAIN == error_no() || XEINPROGRESS == error_no()) //插入一个写事件，防止SOCKET异常
{
CORE_WARNING("core udp send EAGAIN");
REACTOR_INSTANCE()->register_handler(this, MASK_WRITE);
bin_strm.rewind(true);
return 0;
}
else
{
bin_strm.rewind(true);
CORE_FATAL("core udp send failed, remote addr = " << remote_addr);
return -1;
}
bin_strm.rewind(true);
}
THROTTLER()->add_udp_packet(bin_strm.data_size(), true);
bin_strm.rewind(true);
return rc;
}
//发送一个握手失败的SYN2
void RUDPObject::send_syn2(uint32_t remote_rudp_id, uint8_t result, uint16_t check_sum, const Inet_Addr& remote_addr, IRUDPAdapter* adapter)
{
if(adapter == NULL)
return ;
RUDPHeadPacket head;
head.msg_id_ = RUDP_SYN2;
head.remote_rudp_id_ = remote_rudp_id;
head.check_sum_ = check_sum;
RUDPSyn2Packet syn2;
syn2.version_ = RUDP_VERSION;
syn2.local_rudp_id_ = 0;
syn2.local_ts_ = CBaseTimeValue::get_time_value().msec();
syn2.remote_ts_ = syn2.local_ts_;
syn2.syn2_result_ = result;
syn2.max_segment_size_ = MAX_SEGMENT_SIZE;
syn2.start_seq_ = 0;
BinStream strm;
strm.rewind(true);
strm << adapter->get_title() << head << syn2;
adapter->send(strm, remote_addr);
}