提高稳定性
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1147ef5a89
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@ -11,7 +11,7 @@ from collections import deque
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class ReliableChannel:
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"""可靠传输通道类（与provider中的类似）"""
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def __init__(self, udp_sock, remote_addr):
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def __init__(self, udp_sock, remote_addr, conn_id):
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self.udp_sock = udp_sock
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self.remote_addr = remote_addr
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self.send_buffer = deque()
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@ -20,10 +20,11 @@ class ReliableChannel:
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self.expected_seq = 0
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self.last_ack = -1
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self.ack_interval = 0.2
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self.conn_id = conn_id
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self.last_ack_time = 0
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self.window_size = 10
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self.retransmit_timers = {}
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self.retransmit_timeout = 0.5
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self.retransmit_timeout = 1
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self.running = True
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def send(self, data, is_control=False):
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@ -50,11 +51,14 @@ class ReliableChannel:
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for packet in list(self.send_buffer)[:self.window_size]:
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self.udp_sock.sendto(json.dumps({
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'action': 'data',
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'packet': packet
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'packet': packet,
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'conn_id': self.conn_id
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}).encode(), self.remote_addr)
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def process_ack(self, ack_seq):
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print(f"收到ack: {ack_seq}")
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if ack_seq > self.last_ack:
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print(f"更新last_ack: {ack_seq}")
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self.last_ack = ack_seq
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for seq in list(self.retransmit_timers.keys()):
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if seq <= ack_seq:
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@ -65,9 +69,9 @@ class ReliableChannel:
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seq = packet['seq']
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data = bytes.fromhex(packet['data'])
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if time.time() - self.last_ack_time > self.ack_interval:
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self.send_ack()
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self.last_ack_time = time.time()
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# if time.time() - self.last_ack_time > self.ack_interval:
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self.send_ack()
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self.last_ack_time = time.time()
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if seq == self.expected_seq:
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self.expected_seq += 1
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@ -82,8 +86,8 @@ class ReliableChannel:
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def _process_buffered(self):
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while self.expected_seq in self.recv_buffer:
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data = self.recv_buffer.pop(self.expected_seq)
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self.expected_seq += 1
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self.recv_queue.append(data) # 添加到队列
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# self.expected_seq += 1
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# self.recv_queue.append(data) # 添加到队列
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def get_received_data(self):
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"""从接收队列中取出数据"""
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@ -93,7 +97,8 @@ class ReliableChannel:
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ack_packet = {
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'action': 'ack',
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'ack_seq': self.expected_seq - 1,
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'window': self.window_size
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'window': self.window_size,
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'conn_id': self.conn_id
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}
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self.udp_sock.sendto(json.dumps(ack_packet).encode(), self.remote_addr)
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@ -101,11 +106,13 @@ class ReliableChannel:
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now = time.time()
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for seq, send_time in list(self.retransmit_timers.items()):
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if now - send_time > self.retransmit_timeout:
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print(f'有重传{seq}')
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for packet in self.send_buffer:
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if packet['seq'] == seq:
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self.udp_sock.sendto(json.dumps({
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'action': 'data',
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'packet': packet
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'packet': packet,
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'conn_id': self.conn_id
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}).encode(), self.remote_addr)
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self.retransmit_timers[seq] = now
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break
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@ -128,7 +135,7 @@ class ServiceConnector:
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self.udp_sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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self.udp_sock.bind(('0.0.0.0', 0))
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self.udp_sock.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, 1024 * 1024) # 1MB接收缓冲区
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self.udp_sock.settimeout(0.1)
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self.udp_sock.settimeout(5)
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# 创建TCP监听套接字
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self.tcp_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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@ -195,7 +202,7 @@ class ServiceConnector:
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self.udp_sock.sendto(json.dumps({'action': 'punch_check'}).encode(), self.provider_addr)
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data, addr = self.udp_sock.recvfrom(4096)
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if addr == self.provider_addr:
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print("打洞成功! 已建立UDP连接")
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print("打洞成功!")
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return True
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else:
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print(f"错误的响应来源: {addr}")
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@ -211,19 +218,22 @@ class ServiceConnector:
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while self.running:
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try:
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data, addr = self.udp_sock.recvfrom(65535)
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print(f"收到UDP消息: {data.decode()}")
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try:
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message = json.loads(data.decode())
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action = message.get('action')
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if action == 'punch_response':
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# 打洞响应
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print(f"收到打洞响应: {message}")
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pass
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elif action == 'connected':
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# 连接建立成功
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print(f"连接建立成功: {message}")
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conn_id = message['conn_id']
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if conn_id in self.active_connections:
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# 创建可靠通道
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channel = ReliableChannel(self.udp_sock, self.provider_addr)
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channel = ReliableChannel(self.udp_sock, self.provider_addr, conn_id)
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self.reliable_channels[conn_id] = channel
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# 启动通道监控
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@ -233,7 +243,6 @@ class ServiceConnector:
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daemon=True
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).start()
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elif action == 'data':
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# 处理数据包
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conn_id = message.get('conn_id')
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@ -245,6 +254,7 @@ class ServiceConnector:
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data_chunk = channel.process_packet(packet)
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if data_chunk and conn_id in self.active_connections:
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# 转发数据到本地客户端
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print(f"转发数据到本地客户端: {data_chunk}")
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self.active_connections[conn_id].send(data_chunk)
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elif action == 'ack':
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# 处理ACK确认
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@ -260,7 +270,10 @@ class ServiceConnector:
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conn_id = message['conn_id']
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print(f"连接失败: {message['message']}")
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self.close_connection(conn_id)
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else:
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print(f"未知动作: {action}")
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except json.JSONDecodeError:
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print("JSON解析错误")
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# 原始UDP包可能是打洞确认
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pass
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except Exception as e:
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@ -296,30 +309,16 @@ class ServiceConnector:
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daemon=True
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).start()
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threading.Thread(
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target=self.forward_incoming_data,
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args=(conn_id, client_sock),
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daemon=True
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).start()
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except socket.timeout:
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pass
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except Exception as e:
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print(f"TCP监听错误: {str(e)}")
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def forward_incoming_data(self, conn_id, local_sock):
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while conn_id in self.active_connections:
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if conn_id in self.reliable_channels:
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channel = self.reliable_channels[conn_id]
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data = channel.get_received_data()
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if data:
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local_sock.sendall(data)
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else:
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time.sleep(0.1)
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def forward_data(self, conn_id, client_sock):
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"""转发本地TCP数据到UDP通道"""
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try:
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while conn_id not in self.reliable_channels:
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time.sleep(0.01)
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while conn_id in self.active_connections:
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# 从本地客户端读取数据
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data = client_sock.recv(32768) # 32KB数据块
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@ -329,6 +328,7 @@ class ServiceConnector:
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# 通过可靠通道发送
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if conn_id in self.reliable_channels:
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channel = self.reliable_channels[conn_id]
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print(f"发送数据: {data}")
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channel.send(data)
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except socket.timeout:
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pass
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38
provider1.py
38
provider1.py
@ -9,7 +9,7 @@ from collections import deque
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class ReliableChannel:
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"""可靠传输通道类，实现序列号、ACK确认和重传"""
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def __init__(self, udp_sock, remote_addr):
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def __init__(self, udp_sock, remote_addr, conn_id):
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self.udp_sock = udp_sock
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self.remote_addr = remote_addr
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self.send_buffer = deque() # 发送缓冲区
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@ -22,10 +22,12 @@ class ReliableChannel:
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self.window_size = 10 # 滑动窗口大小
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self.retransmit_timers = {} # 重传计时器 {seq: send_time}
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self.retransmit_timeout = 0.5 # 重传超时时间 (秒)
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self.conn_id = conn_id
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self.running = True
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def send(self, data, is_control=False):
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"""发送数据并管理发送缓冲区"""
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print(f"发送数据: {data}")
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if not self.running:
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return
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@ -56,11 +58,13 @@ class ReliableChannel:
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for packet in list(self.send_buffer)[:self.window_size]:
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self.udp_sock.sendto(json.dumps({
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'action': 'data',
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'packet': packet
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'packet': packet,
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'conn_id': self.conn_id
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}).encode(), self.remote_addr)
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def process_ack(self, ack_seq):
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"""处理接收到的ACK"""
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print(f"收到ACK: {ack_seq}")
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if ack_seq > self.last_ack:
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self.last_ack = ack_seq
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# 清除重传计时器
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@ -98,8 +102,8 @@ class ReliableChannel:
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"""处理接收缓冲区中的连续数据"""
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while self.expected_seq in self.recv_buffer:
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data = self.recv_buffer.pop(self.expected_seq)
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self.expected_seq += 1
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self.recv_queue.append(data) # 添加到队列
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# self.expected_seq += 1
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# self.recv_queue.append(data) # 添加到队列
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def get_received_data(self):
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"""从接收队列中取出数据"""
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@ -110,7 +114,8 @@ class ReliableChannel:
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ack_packet = {
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'action': 'ack',
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'ack_seq': self.expected_seq - 1, # 确认到目前收到的最大连续序列号
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'window': self.window_size
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'window': self.window_size,
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'conn_id': self.conn_id
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}
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self.udp_sock.sendto(json.dumps(ack_packet).encode(), self.remote_addr)
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@ -124,7 +129,8 @@ class ReliableChannel:
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if packet['seq'] == seq:
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self.udp_sock.sendto(json.dumps({
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'action': 'data',
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'packet': packet
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'packet': packet,
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'conn_id': self.conn_id
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}).encode(), self.remote_addr)
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self.retransmit_timers[seq] = now
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break
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@ -181,6 +187,7 @@ class ServiceProvider:
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while self.running:
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try:
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data, addr = self.udp_sock.recvfrom(65535)
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print(f"收到UDP消息: {data.decode()}")
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try:
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message = json.loads(data.decode())
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action = message.get('action')
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@ -216,6 +223,7 @@ class ServiceProvider:
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data_chunk = channel.process_packet(packet)
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if data_chunk and conn_id in self.active_connections:
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# 转发数据到本地服务
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print(f"转发数据包到本地服务: {data_chunk[:10]}")
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self.active_connections[conn_id]['local_sock'].sendall(data_chunk)
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elif action == 'ack':
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# 处理ACK确认
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@ -249,7 +257,7 @@ class ServiceProvider:
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local_sock.connect(('127.0.0.1', self.internal_port))
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# 创建可靠通道
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channel = ReliableChannel(self.udp_sock, client_addr)
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channel = ReliableChannel(self.udp_sock, client_addr, conn_id)
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self.reliable_channels[conn_id] = channel
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# 存储连接
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@ -273,12 +281,6 @@ class ServiceProvider:
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daemon=True
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).start()
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threading.Thread(
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target=self.forward_incoming_data,
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args=(conn_id, channel, local_sock),
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daemon=True
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).start()
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threading.Thread(
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target=self.monitor_channel,
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args=(conn_id, channel),
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@ -294,14 +296,6 @@ class ServiceProvider:
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'message': str(e)
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}).encode(), client_addr)
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def forward_incoming_data(self, conn_id, channel, local_sock):
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while conn_id in self.active_connections:
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data = channel.get_received_data()
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if data:
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local_sock.sendall(data)
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else:
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time.sleep(0.02)
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def forward_data(self, conn_id, local_sock, channel):
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"""转发TCP数据到UDP通道"""
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try:
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@ -387,7 +381,7 @@ class ServiceProvider:
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if __name__ == '__main__':
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COORDINATOR_ADDR = ('www.awin-x.top', 5000)
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SERVICE_NAME = "my_service"
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INTERNAL_PORT = 5001
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INTERNAL_PORT = 22
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provider = ServiceProvider(COORDINATOR_ADDR, SERVICE_NAME, INTERNAL_PORT)
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provider.run()
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