Not always resetting socket timeout on XBee

README.md

@@ -79,9 +79,9 @@ Watch this repo for new updates! And of course, contributions are welcome ;)
 - UDP
     - Not yet supported on any module, though it may be some day
 - SSL/TLS (HTTPS)
-    - Supported on¹:
+    - Supported on:
         - SIM800, u-Blox, XBee _cellular_, ESP8266, and Sequans Monarch
-        ¹ - only some device models or firmware revisions have this feature (SIM8xx R14.18, A7, etc.)
+        - Note:  only some device models or firmware revisions have this feature (SIM8xx R14.18, A7, etc.)
     - Not yet supported on:
         - Quectel modems, SIM7000, SIM5360/5320/7100/7500/7600
     - Not possible on:

src/TinyGsmClientXBee.h

@@ -131,7 +131,9 @@ public:
     // For cellular models, per documentation: If you change the TM (socket
     // timeout) value while in Transparent Mode, the current connection is
     // immediately closed.
-    at->sendAT(GF("TM64"));  // Set socket timeout (using Digi default of 10 seconds)
+    at->sendAT(GF("TM"));  // Get socket timeout
+    String timeoutUsed = at->readResponseString(5000L);
+    at->sendAT(GF("TM"), timeoutUsed);  // Re-set socket timeout
     at->waitResponse(maxWaitMs);  // This response can be slow
     at->writeChanges();
     at->exitCommand();