V1.7.21 - Updates

- Implemented INDI Handshake on Wifi

Author: ClutchplateDude

Software/Arduino code/OpenAstroTracker/OpenAstroTracker.hpp

@@ -18,7 +18,7 @@
 
 #include "Globals.hpp"
 
-String version = "V1.7.20";
+String version = "V1.7.21";
 
 ///////////////////////////////////////////////////////////////////////////
 // Please see the Globals.h file for configuration of the firmware.

Software/Arduino code/OpenAstroTracker/WifiControl.cpp

@@ -134,14 +134,24 @@ void WifiControl::infraToAPFailover() {
 
 void WifiControl::tcpLoop() {
     if (client && client.connected()) {
+        unsigned char buffer[2];
         while (client.available()) {
-            String cmd = client.readStringUntil('#');
-            LOGV2(DEBUG_WIFI,"WifiTCP: Query <-- %s#", cmd.c_str());
-            String retVal = _cmdProcessor->processCommand(cmd);
-
-            if (retVal != "") {
-                client.write(retVal.c_str());
-                LOGV2(DEBUG_WIFI,"WifiTCP: Reply --> %s", retVal.c_str());
+            // Peek first byte and check for ACK (0x06) handshake
+            client.read(buffer, 1);
+            if (buffer[0] == 0x06) {
+                LOGV1(DEBUG_WIFI,"WifiTCP: Query <-- Handshake request");
+                client.write("1");
+                LOGV1(DEBUG_WIFI,"WifiTCP: Reply --> 1");
+            }
+            else {
+                String cmd = String(buffer[0]) + client.readStringUntil('#');
+                LOGV2(DEBUG_WIFI,"WifiTCP: Query <-- %s#", cmd.c_str());
+                String retVal = _cmdProcessor->processCommand(cmd);
+
+                if (retVal != "") {
+                    client.write(retVal.c_str());
+                    LOGV2(DEBUG_WIFI,"WifiTCP: Reply --> %s", retVal.c_str());
+                }
             }
 
             _mount->loop();