void RUDPSocket::process_syn(RUDPSynPacket& syn, const Inet_Addr& remote_addr)
{
RUDP_INFO("recv syn from " << remote_addr << ", rudp id = " << rudp_id_);
if(state_ == RUDP_IDLE && rudp_id_ != INVALID_RUDP_HANDLE)
{
uint64_t now_timer = CBaseTimeValue::get_time_value().msec();
//初始化接收SEQ
recv_buffer_.set_first_seq(syn.start_seq_);
recv_buffer_.set_send_last_ack_ts(now_timer);
ccc_.init(send_buffer_.get_buffer_seq() - 1);
//设置连接信息
remote_addr_ = remote_addr;
remote_rudp_id_ = syn.local_rudp_id_;
RUDP_INFO("sart seq = " << syn.start_seq_ << ", remote_rudp_id = " << remote_rudp_id_);
RUDP_DEBUG("send syn2, rudp socket id = " << rudp_id_);
send_syn2(0, syn.local_ts_);
RUDP_INFO("state = RUDP_CONNECTED, rudp id = " << rudp_id_);
set_state(RUDP_CONNECTED);
//发送一个KEEPLIVE
RUDP_DEBUG("send keeplive, rudp socket id =" << rudp_id_);
send_keeplive(now_timer);
}
else if(state_ == RUDP_CONNECTING || state_ == RUDP_CONNECTED)
{
RUDP_INFO("send syn2, rudp socket id = " << rudp_id_);
send_syn2(0, syn.local_ts_);
}
else
{
RUDP_DEBUG("send syn2(ERROR_SYN_STATE), rudp socket id = " << rudp_id_);
send_syn2(ERROR_SYN_STATE, syn.local_ts_);
RUDP_INFO("state = RUDP_CLOSE, rudp id = " << rudp_id_);
set_state(RUDP_CLOSE);
}
}
void RUDPObject::process(IRUDPAdapter* adapter, BinStream& strm, const Inet_Addr& remote_addr)
{
uint8_t index = INVALID_ADAPTER_INDEX;
if(adapter != NULL)
index = adapter->get_index();
if(adapter_array_[index] == NULL)
{
RUDP_FATAL("adapter is not attach!!!");
return ;
}
PARSE_RUDP_HEAD(rudp_head, "parse rudp head failed!!");
RUDPSocket *rudp_session = get_socket(rudp_head.remote_rudp_id_);
if(rudp_session != NULL)
{
rudp_session->process(rudp_head.msg_id_, rudp_head.check_sum_, strm, remote_addr);
return ;
}
//处理SYN连接请求
if(rudp_head.msg_id_ == RUDP_SYN && rudp_head.remote_rudp_id_ == INVALID_RUDP_HANDLE)
{
PARSE_RUDP_MESSAGE(strm, RUDPSynPacket, syn, "parse syn failed!");
//在半开连接中找
rudp_session = find_by_peer_id(syn.local_rudp_id_, remote_addr);
if(rudp_session == NULL)
{
int32_t new_rudp_id = create_socket();
if(new_rudp_id == INVALID_RUDP_HANDLE)
{
send_syn2(rudp_head.remote_rudp_id_, SYSTEM_SYN_ERROR, rudp_head.check_sum_, remote_addr, adapter);
RUDP_INFO("send syn2 to " << remote_addr);
return ;
}
if(this->bind(new_rudp_id, adapter->get_local_addr()) != 0)
{
free_sockets(new_rudp_id);
send_syn2(rudp_head.remote_rudp_id_, SYSTEM_SYN_ERROR, rudp_head.check_sum_, remote_addr, adapter);
RUDP_INFO("send syn2 to " << remote_addr);
return ;
}
//建立远程SOCKET ID与本地SOCKET ID的关系，防止重复建立连接
RUDPPeerInfo info(syn.local_rudp_id_, remote_addr);
peer_socket_ids_[info] = new_rudp_id;
rudp_session = get_socket(new_rudp_id);
rudp_session->set_check_sum(rudp_head.check_sum_);
//提示上层EVENT HANDLE进行ACCEPT，可以在上层进行SOCKET属性设置
if(listener_ != NULL)
listener_->rudp_accept_event(new_rudp_id);
}
//进行消息处理
rudp_session->process_syn(syn, remote_addr);
}
else
{
RUDP_WARNING("error msg, msg id = " << (uint16_t)rudp_head.msg_id_ << ", rudp id = " << rudp_head.remote_rudp_id_ << ", remote addr = "<< remote_addr);
}
}
