修改计时器逻辑以完全模仿GBN算法

Labs/Lab3/src/Receiver.py

@@ -55,7 +55,7 @@ class Receiver:
 
 if __name__ == "__main__":
     max_seq_num = 20
-    networkLayer = NetworkLayer(host="172.29.68.245", port=23666)
+    networkLayer = NetworkLayer(host="192.168.31.197", port=23666)
     applicationLayer = ApplicationLayer()
     receiver = Receiver(networkLayer, applicationLayer)
     while True:
@@ -63,7 +63,7 @@ if __name__ == "__main__":
         if message:
             seq_num, data = receiver.extract(message)
             receiver.deliver_data(data, seq_num)
-            if receiver.expected_seq_num == max_seq_num:
+            if receiver.expected_seq_num > max_seq_num:
                 break
     print("序列传输完成。")
     networkLayer.close()

Labs/Lab3/src/Sender.py

@@ -6,8 +6,6 @@ class Package:
     def __init__(self, data:str, seq_num:int) -> None:
         self.data = data
         self.seq_num = seq_num
-        self.send_time = None
-
 
 class ApplicationLayer:
     def __init__(self, data_len:int=5000) -> None:
@@ -52,7 +50,7 @@ class Sender:
         self.next_seq_num = 1
         self.timeout_ms = timeout_ms
         self.networkLayer = networkLayer
-        self.timer = False
+        self.timer = None
 
     def rdt_send(self, data:str) -> bool:
         if self.next_seq_num > max_seq_num:
@@ -65,9 +63,8 @@ class Sender:
             self.package_list[self.next_seq_num].data, 
             self.package_list[self.next_seq_num].seq_num
         )
-        self.package_list[self.next_seq_num].send_time = time.time()
         if self.base_num == self.next_seq_num:
-            self.timer = True
+            self.timer = time.time()
         self.next_seq_num += 1
         return True
         
@@ -77,9 +74,10 @@ class Sender:
             print(f"(ACK={ack_index}) < (base={self.base_num})，ACK失效丢弃。")
             return
         self.base_num = ack_index + 1
+        self.timer = time.time()
         if self.base_num == self.next_seq_num:
             print(f"将base_num设置为下一个序列编号。")
-            self.timer = False
+            self.timer = None
         else:
             print(f"将base_num设置为{self.package_list[self.base_num].seq_num}。")
         
@@ -93,9 +91,9 @@ class Sender:
         print()
 
     def is_timeout(self) -> bool:
-        if self.timer is False:
+        if self.timer is None:
             return False
-        return time.time() - self.package_list[self.base_num].send_time >= 0.001 * self.timeout_ms
+        return time.time() - self.timer >= 0.001 * self.timeout_ms
     
     def gbn(self):
         seq_index = self.base_num
@@ -104,8 +102,8 @@ class Sender:
                 self.package_list[seq_index].data, 
                 self.package_list[seq_index].seq_num
             )
-            self.package_list[seq_index].send_time = time.time()
             seq_index += 1
+        self.timer = time.time()
 
     def show_gbn(self) -> list[int]:
         show = []