fix: 重连时间设置更小

at_client.py

@@ -76,10 +76,11 @@ class ATClient:
         """
         expect_b = expect.encode() if isinstance(expect, str) else expect
         with self._cmd_lock:
-            # 初始化等待
+            with self._q_lock:
-            self._waiting = True
+                # 初始化等待
-            self._expect = expect_b
+                self._waiting = True
-            self._resp = b""
+                self._expect = expect_b
+                self._resp = b""
 
             # 发送
             if cmd:
@@ -300,8 +301,8 @@ class ATClient:
                     if len(self._rx) > 512 * 1024:
                         self._rx = self._rx[-256 * 1024:]
                 else:
-                    if len(self._rx) > 16384:
+                    if len(self._rx) > 32768:
-                        self._rx = self._rx[-4096:]
+                        self._rx = self._rx[-16384:]
 
 
 

config.py

@@ -24,7 +24,7 @@ TRIANGLE_DETECT_SCALE = 0.4
 # SERVER_IP = "stcp.shelingxingqiu.com"
 SERVER_IP = "www.shelingxingqiu.com"
 SERVER_PORT = 50005
-HEARTBEAT_INTERVAL = 15  # 心跳间隔（秒）
+HEARTBEAT_INTERVAL = 5  # 心跳间隔（秒）
 
 # WiFi 质量评估（开机先尝试 WiFi；质量差且 4G 可用则切到 4G，本次上电直至关机锁定 4G）
 WIFI_QUALITY_RTT_SAMPLES = 3  # 到业务服务器 TCP 建连耗时采样次数，取中位数

network.py

@@ -721,7 +721,7 @@ class NetworkManager:
             if self._network_type == "wifi":
                 return self._check_wifi_connection()
             elif self._network_type == "4g":
-                return True  # 4G连接状态由AT命令维护
+                return self._check_4g_connection()
             return False
 
         # 自动选择网络
@@ -738,6 +738,37 @@ class NetworkManager:
             return self._connect_tcp_via_4g()
         return False
 
+    def _check_4g_connection(self):
+        """检查4G TCP连接是否仍然有效（通过查询PDP地址验证网络附着状态）"""
+        try:
+            atc = hardware_manager.at_client
+            if atc is None:
+                return False
+            if not self._uart4g_lock.acquire(timeout=3000):
+                # 获取锁超时说明有其他操作在进行，视为连接仍有效
+                return True
+            try:
+                r = atc.send("AT+CGPADDR=1", "OK", 3000)
+                m = re.search(r'\+CGPADDR:\s*1,"([^"]+)"', r)
+                ip = m.group(1) if m else ""
+                if ip and ip != "0.0.0.0":
+                    return True
+                # 无IP或IP无效，尝试重新激活PDP
+                self.logger.warning("[4G-TCP] PDP地址无效，尝试重新激活")
+                atc.send("AT+MIPCALL=1,1", "OK", 15000)
+                r2 = atc.send("AT+CGPADDR=1", "OK", 3000)
+                m2 = re.search(r'\+CGPADDR:\s*1,"([^"]+)"', r2)
+                ip2 = m2.group(1) if m2 else ""
+                if ip2 and ip2 != "0.0.0.0":
+                    return True
+                self.logger.error("[4G-TCP] 重新激活PDP仍无有效IP，连接已断开")
+                return False
+            finally:
+                self._uart4g_lock.release()
+        except Exception as e:
+            self.logger.warning(f"[4G-TCP] 连接检查异常: {e}")
+            return True  # 异常时不误判断线
+
     def _wrap_wifi_tls(self, plain_sock, hostname):
         """
         在已建立的 TCP socket 上做 TLS（WiFi 走主机 ssl 库；4G 仍用模组 AT+SSL）。
@@ -1085,6 +1116,8 @@ class NetworkManager:
                     total += n
 
                 hardware_manager.uart4g.write(b"\x1A")
+                with hardware_manager.at_client._q_lock:
+                    hardware_manager.at_client._rx = b""
                 r = hardware_manager.at_client.send("", "OK", 8000)
                 if ("SEND OK" in r) or ("OK" in r) or ("+MIPSEND" in r):
                     return True
@@ -1799,7 +1832,7 @@ class NetworkManager:
                     continue
 
                 if not self.connect_server():
-                    time.sleep_ms(5000)
+                    time.sleep_ms(1000)
                     continue
 
                 # 发送登录包
@@ -1820,7 +1853,7 @@ class NetworkManager:
                         self.disconnect_server()
                     except:
                         pass
-                    time.sleep_ms(2000)
+                    time.sleep_ms(500)
                     continue
 
                 self.logger.info("➡️ 登录包已发送，等待确认...")
@@ -2309,8 +2342,8 @@ class NetworkManager:
                                     pass
                                 break
                             else:
-                                # 不立即断开，让下一轮心跳再试；同时缩短一点等待，提升恢复速度
+                                # 不立即断开，让下一轮心跳再试
-                                time.sleep_ms(200)
+                                time.sleep_ms(50)
                                 continue
                         else:
                             send_hartbeat_fail_count = 0
@@ -2340,8 +2373,8 @@ class NetworkManager:
                     self._send_event.clear()
 
                 self._tcp_connected = False
-                self.logger.error("连接异常，2秒后重连...")
+                self.logger.error("连接异常，50ms后重连...")
-                time.sleep_ms(200)
+                time.sleep_ms(50)
 
             except Exception as e:
                 # TCP主循环的顶层异常捕获，防止线程静默退出