Limit maximum APRS-IS incoming message length

loraprs_service.cpp

@@ -219,6 +219,10 @@ void Service::onAprsisDataAvailable()
     Serial.print(c);
     if (c == '\n') break;
     aprsisData += c;
+    if (aprsisData.length() >= CfgMaxAprsInMessageSize) {
+      Serial.println("APRS-IS incoming message is too long, skipping tail");
+      break;
+    }
   }
 
   if (config_.EnableIsToRf && aprsisData.length() > 0) {

loraprs_service.h

@@ -84,6 +84,7 @@ private:
   const int CfgWiFiConnRetryMaxTimes = 10;
   const int CfgMaxAX25PayloadSize = 512;
   const int CfgFreqCorrMinHz = 150;
+  const int CfgMaxAprsInMessageSize = 255;
 
   // csma parameters, overriden with KISS commands
   const long CfgCsmaPersistence = 100;  // 255 for real time, lower for higher traffic