tcp/quic lab and switch lab added

network/tcpquiclab/quic_perf_server.c

@@ -103,7 +103,7 @@ int main(int argc, char *argv[]) {
                          client->sock = sock;
                          client->peer_addr = peer_addr;
                          client->peer_addr_len = peer_addr_len;
-                         
+
                          uint8_t server_scid[QUICHE_MAX_CONN_ID_LEN];
                          int rng = open("/dev/urandom", O_RDONLY);
                          if (rng >= 0) {
@@ -117,7 +117,7 @@ int main(int argc, char *argv[]) {
                          printf("New performance connection accepted.\n");
                     }
                 }
-                
+
                 if (client != NULL) {
                     quiche_conn_recv(client->conn, buf, read_len, &(quiche_recv_info){
                         .to = (struct sockaddr *)&sa,
@@ -131,7 +131,7 @@ int main(int argc, char *argv[]) {
 
         if (client != NULL) {
             quiche_conn *conn = client->conn;
-            
+
             if (quiche_conn_is_closed(conn)) {
                 printf("Connection closed.\n");
                 quiche_conn_free(conn);
@@ -148,7 +148,7 @@ int main(int argc, char *argv[]) {
                         clock_gettime(CLOCK_MONOTONIC, &client->start_time);
                         client->timer_started = 1;
                     }
-                    
+
                     uint8_t recv_buf[65535];
                     bool fin = false;
                     uint64_t err_code = 0;
@@ -162,7 +162,7 @@ int main(int argc, char *argv[]) {
                         double time_taken = (end.tv_sec - client->start_time.tv_sec) + (end.tv_nsec - client->start_time.tv_nsec) / 1e9;
                         double mb = client->total_bytes / (1024.0 * 1024.0);
                         double throughput = mb / time_taken;
-                        
+
                         if (!done_printing) {
                              printf("Received %.2f MB in %.2f seconds.\n", mb, time_taken);
                              printf("Throughput: %.2f MB/s\n", throughput);
@@ -172,18 +172,24 @@ int main(int argc, char *argv[]) {
                 }
                 quiche_stream_iter_free(readable);
             }
-            
+
+            bool has_outgoing = false;
             while (1) {
                 quiche_send_info send_info;
                 ssize_t written = quiche_conn_send(conn, out, sizeof(out), &send_info);
                 if (written == QUICHE_ERR_DONE) break;
                 if (written < 0) break;
                 sendto(sock, out, written, 0, (struct sockaddr *)&send_info.to, send_info.to_len);
+                has_outgoing = true;
             }
-            
+
             quiche_conn_on_timeout(conn);
+
+            // 使用更短的轮询间隔以提高响应速度
+            if (!has_outgoing) {
+                usleep(100);  // 100微秒轮询
+            }
         }
-        usleep(100); 
     }
     
     quiche_config_free(config);