mirror of
https://github.com/wangyu-/UDPspeeder.git
synced 2025-01-18 22:09:35 +08:00
317 lines
9.2 KiB
C++
317 lines
9.2 KiB
C++
#include "tunnel.h"
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int tunnel_client_event_loop()
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{
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int i, j, k;int ret;
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int yes = 1;
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int epoll_fd;
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int remote_fd;
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fd64_t remote_fd64;
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conn_info_t *conn_info_p=new conn_info_t;
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conn_info_t &conn_info=*conn_info_p; //huge size of conn_info,do not allocate on stack
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int local_listen_fd;
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new_listen_socket(local_listen_fd,local_ip_uint32,local_port);
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epoll_fd = epoll_create1(0);
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assert(epoll_fd>0);
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const int max_events = 4096;
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struct epoll_event ev, events[max_events];
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if (epoll_fd < 0) {
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mylog(log_fatal,"epoll return %d\n", epoll_fd);
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myexit(-1);
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}
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ev.events = EPOLLIN;
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ev.data.u64 = local_listen_fd;
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ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, local_listen_fd, &ev);
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if (ret!=0) {
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mylog(log_fatal,"add udp_listen_fd error\n");
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myexit(-1);
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}
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assert(new_connected_socket(remote_fd,remote_ip_uint32,remote_port)==0);
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remote_fd64=fd_manager.create(remote_fd);
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mylog(log_debug,"remote_fd64=%llu\n",remote_fd64);
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ev.events = EPOLLIN;
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ev.data.u64 = remote_fd64;
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ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, remote_fd, &ev);
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if (ret!= 0) {
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mylog(log_fatal,"add raw_fd error\n");
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myexit(-1);
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}
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ev.events = EPOLLIN;
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ev.data.u64 = delay_manager.get_timer_fd();
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mylog(log_debug,"delay_manager.get_timer_fd()=%d\n",delay_manager.get_timer_fd());
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ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, delay_manager.get_timer_fd(), &ev);
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if (ret!= 0) {
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mylog(log_fatal,"add delay_manager.get_timer_fd() error\n");
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myexit(-1);
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}
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u64_t tmp_fd64=conn_info.fec_encode_manager.get_timer_fd64();
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ev.events = EPOLLIN;
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ev.data.u64 = tmp_fd64;
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mylog(log_debug,"conn_info.fec_encode_manager.get_timer_fd64()=%llu\n",conn_info.fec_encode_manager.get_timer_fd64());
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ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fd_manager.to_fd(tmp_fd64), &ev);
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if (ret!= 0) {
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mylog(log_fatal,"add fec_encode_manager.get_timer_fd64() error\n");
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myexit(-1);
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}
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conn_info.timer.add_fd_to_epoll(epoll_fd);
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conn_info.timer.set_timer_repeat_us(timer_interval*1000);
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mylog(log_debug,"conn_info.timer.get_timer_fd()=%d\n",conn_info.timer.get_timer_fd());
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int fifo_fd=-1;
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if(fifo_file[0]!=0)
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{
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fifo_fd=create_fifo(fifo_file);
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ev.events = EPOLLIN;
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ev.data.u64 = fifo_fd;
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ret = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, fifo_fd, &ev);
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if (ret!= 0) {
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mylog(log_fatal,"add fifo_fd to epoll error %s\n",strerror(errno));
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myexit(-1);
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}
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mylog(log_info,"fifo_file=%s\n",fifo_file);
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}
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while(1)////////////////////////
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{
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if(about_to_exit) myexit(0);
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int nfds = epoll_wait(epoll_fd, events, max_events, 180 * 1000);
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if (nfds < 0) { //allow zero
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if(errno==EINTR )
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{
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mylog(log_info,"epoll interrupted by signal continue\n");
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}
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else
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{
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mylog(log_fatal,"epoll_wait return %d,%s\n", nfds,strerror(errno));
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myexit(-1);
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}
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}
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int idx;
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for (idx = 0; idx < nfds; ++idx) {
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if(events[idx].data.u64==(u64_t)conn_info.timer.get_timer_fd())
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{
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uint64_t value;
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read(conn_info.timer.get_timer_fd(), &value, 8);
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conn_info.conv_manager.clear_inactive();
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mylog(log_trace,"events[idx].data.u64==(u64_t)conn_info.timer.get_timer_fd()\n");
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conn_info.stat.report_as_client();
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if(debug_force_flush_fec)
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{
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int out_n;char **out_arr;int *out_len;my_time_t *out_delay;
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dest_t dest;
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dest.type=type_fd64;
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dest.inner.fd64=remote_fd64;
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dest.cook=1;
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from_normal_to_fec(conn_info,0,0,out_n,out_arr,out_len,out_delay);
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for(int i=0;i<out_n;i++)
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{
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delay_send(out_delay[i],dest,out_arr[i],out_len[i]);
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}
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}
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}
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else if (events[idx].data.u64 == (u64_t)fifo_fd)
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{
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char buf[buf_len];
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int len=read (fifo_fd, buf, sizeof (buf));
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if(len<0)
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{
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mylog(log_warn,"fifo read failed len=%d,errno=%s\n",len,strerror(errno));
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continue;
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}
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buf[len]=0;
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handle_command(buf);
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}
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else if (events[idx].data.u64 == (u64_t)local_listen_fd||events[idx].data.u64 == conn_info.fec_encode_manager.get_timer_fd64())
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{
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char data[buf_len];
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int data_len;
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ip_port_t ip_port;
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u32_t conv;
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int out_n;char **out_arr;int *out_len;my_time_t *out_delay;
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dest_t dest;
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dest.type=type_fd64;
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dest.inner.fd64=remote_fd64;
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dest.cook=1;
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if(events[idx].data.u64 == conn_info.fec_encode_manager.get_timer_fd64())
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{
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fd64_t fd64=events[idx].data.u64;
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mylog(log_trace,"events[idx].data.u64 == conn_info.fec_encode_manager.get_timer_fd64()\n");
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uint64_t value;
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if(!fd_manager.exist(fd64)) //fd64 has been closed
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{
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mylog(log_trace,"!fd_manager.exist(fd64)");
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continue;
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}
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if((ret=read(fd_manager.to_fd(fd64), &value, 8))!=8)
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{
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mylog(log_trace,"(ret=read(fd_manager.to_fd(fd64), &value, 8))!=8,ret=%d\n",ret);
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continue;
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}
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if(value==0)
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{
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mylog(log_debug,"value==0\n");
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continue;
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}
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assert(value==1);
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from_normal_to_fec(conn_info,0,0,out_n,out_arr,out_len,out_delay);
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}
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else//events[idx].data.u64 == (u64_t)local_listen_fd
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{
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mylog(log_trace,"events[idx].data.u64 == (u64_t)local_listen_fd\n");
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struct sockaddr_in udp_new_addr_in={0};
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socklen_t udp_new_addr_len = sizeof(sockaddr_in);
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if ((data_len = recvfrom(local_listen_fd, data, max_data_len, 0,
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(struct sockaddr *) &udp_new_addr_in, &udp_new_addr_len)) == -1) {
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mylog(log_error,"recv_from error,this shouldnt happen,err=%s,but we can try to continue\n",strerror(errno));
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continue;
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};
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if(!disable_mtu_warn&&data_len>=mtu_warn)
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{
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mylog(log_warn,"huge packet,data len=%d (>=%d).strongly suggested to set a smaller mtu at upper level,to get rid of this warn\n ",data_len,mtu_warn);
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}
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mylog(log_trace,"Received packet from %s:%d,len: %d\n", inet_ntoa(udp_new_addr_in.sin_addr),
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ntohs(udp_new_addr_in.sin_port),data_len);
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ip_port.ip=udp_new_addr_in.sin_addr.s_addr;
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ip_port.port=ntohs(udp_new_addr_in.sin_port);
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u64_t u64=ip_port.to_u64();
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if(!conn_info.conv_manager.is_u64_used(u64))
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{
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if(conn_info.conv_manager.get_size() >=max_conv_num)
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{
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mylog(log_warn,"ignored new udp connect bc max_conv_num exceed\n");
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continue;
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}
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conv=conn_info.conv_manager.get_new_conv();
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conn_info.conv_manager.insert_conv(conv,u64);
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mylog(log_info,"new packet from %s:%d,conv_id=%x\n",inet_ntoa(udp_new_addr_in.sin_addr),ntohs(udp_new_addr_in.sin_port),conv);
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}
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else
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{
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conv=conn_info.conv_manager.find_conv_by_u64(u64);
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mylog(log_trace,"conv=%d\n",conv);
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}
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conn_info.conv_manager.update_active_time(conv);
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char * new_data;
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int new_len;
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put_conv(conv,data,data_len,new_data,new_len);
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mylog(log_trace,"data_len=%d new_len=%d\n",data_len,new_len);
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from_normal_to_fec(conn_info,new_data,new_len,out_n,out_arr,out_len,out_delay);
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}
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mylog(log_trace,"out_n=%d\n",out_n);
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for(int i=0;i<out_n;i++)
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{
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delay_send(out_delay[i],dest,out_arr[i],out_len[i]);
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}
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}
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else if (events[idx].data.u64 == (u64_t)delay_manager.get_timer_fd()) {
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uint64_t value;
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read(delay_manager.get_timer_fd(), &value, 8);
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mylog(log_trace,"events[idx].data.u64 == (u64_t)delay_manager.get_timer_fd()\n");
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}
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else if(events[idx].data.u64>u32_t(-1) )
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{
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char data[buf_len];
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if(!fd_manager.exist(events[idx].data.u64)) //fd64 has been closed
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{
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mylog(log_trace,"!fd_manager.exist(events[idx].data.u64)");
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continue;
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}
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assert(events[idx].data.u64==remote_fd64);
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int fd=fd_manager.to_fd(remote_fd64);
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int data_len =recv(fd,data,max_data_len,0);
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mylog(log_trace, "received data from udp fd %d, len=%d\n", remote_fd,data_len);
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if(data_len<0)
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{
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if(errno==ECONNREFUSED)
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{
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mylog(log_debug, "recv failed %d ,udp_fd%d,errno:%s\n", data_len,remote_fd,strerror(errno));
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}
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mylog(log_warn, "recv failed %d ,udp_fd%d,errno:%s\n", data_len,remote_fd,strerror(errno));
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continue;
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}
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if(!disable_mtu_warn&&data_len>mtu_warn)
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{
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mylog(log_warn,"huge packet,data len=%d (>%d).strongly suggested to set a smaller mtu at upper level,to get rid of this warn\n ",data_len,mtu_warn);
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}
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if(de_cook(data,data_len)!=0)
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{
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mylog(log_debug,"de_cook error");
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continue;
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}
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int out_n;char **out_arr;int *out_len;my_time_t *out_delay;
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from_fec_to_normal(conn_info,data,data_len,out_n,out_arr,out_len,out_delay);
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mylog(log_trace,"out_n=%d\n",out_n);
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for(int i=0;i<out_n;i++)
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{
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u32_t conv;
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char *new_data;
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int new_len;
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if(get_conv(conv,out_arr[i],out_len[i],new_data,new_len)!=0)
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{
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mylog(log_debug,"get_conv(conv,out_arr[i],out_len[i],new_data,new_len)!=0");
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continue;
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}
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if(!conn_info.conv_manager.is_conv_used(conv))
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{
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mylog(log_trace,"!conn_info.conv_manager.is_conv_used(conv)");
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continue;
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}
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conn_info.conv_manager.update_active_time(conv);
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u64_t u64=conn_info.conv_manager.find_u64_by_conv(conv);
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dest_t dest;
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dest.inner.fd_ip_port.fd=local_listen_fd;
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dest.inner.fd_ip_port.ip_port.from_u64(u64);
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dest.type=type_fd_ip_port;
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delay_send(out_delay[i],dest,new_data,new_len);
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}
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}
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else
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{
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mylog(log_fatal,"unknown fd,this should never happen\n");
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myexit(-1);
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}
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}
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delay_manager.check();
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}
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return 0;
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}
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