tcp/quic lab and switch lab added

network/tcpquiclab/quic_perf_client.c

@@ -7,6 +7,7 @@
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <time.h>
 #include <quiche.h>
 
 #define MAX_DATAGRAM_SIZE 1350
@@ -78,7 +79,7 @@ int main(int argc, char *argv[]) {
     bool finished_sending = false;
 
     while (1) {
-        ssize_t read_len = recv(sock, buf, sizeof(buf), 0);
+        ssize_t read_len = recv(sock, buf, sizeof(buf), MSG_DONTWAIT);
         if (read_len > 0) {
              quiche_conn_recv(conn, buf, read_len, &(quiche_recv_info){
                  .to = (struct sockaddr *)&local_addr,
@@ -87,12 +88,12 @@ int main(int argc, char *argv[]) {
                  .from_len = sizeof(peer_addr),
              });
         }
-        
+
         if (quiche_conn_is_closed(conn)) {
             printf("Connection closed.\n");
             break;
         }
-        
+
         if (quiche_conn_is_established(conn)) {
             // printf("Connection established.\n");
              while (!finished_sending) {
@@ -101,26 +102,36 @@ int main(int argc, char *argv[]) {
                  if (sent > 0) {
                      bytes_sent += sent;
                      if (bytes_sent >= bytes_to_send) {
-                         quiche_conn_stream_send(conn, 4, NULL, 0, true, &err_code); 
+                         quiche_conn_stream_send(conn, 4, NULL, 0, true, &err_code);
                          finished_sending = true;
                          printf("Finished sending data.\n");
                      }
-                 } else {
-                     break; 
+                 } else if (sent == QUICHE_ERR_DONE) {
+                     break;
                  }
              }
         }
-        
+
+        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;
             send(sock, out, written, 0);
+            has_outgoing = true;
         }
-        
+
         quiche_conn_on_timeout(conn);
-        usleep(100);
+
+        // 使用更短的轮询间隔以提高响应速度
+        if (!has_outgoing && !finished_sending) {
+            usleep(100);  // 100微秒轮询
+        }
+
+        if (finished_sending && !has_outgoing) {
+            usleep(1000);
+        }
     }
 
     quiche_conn_free(conn);