updated esp command parsing in UDP server on ESP32

ADIS_ESP32_Eclipse/main/udp_server.c

@@ -43,24 +43,21 @@ static int SendToSocket(int sock, const char *msg, const struct sockaddr *to, so
 void HandleIncomingUdpMessage(const char *rxMsg, int sock, struct sockaddr *source_addr_p, socklen_t source_addr_len) {
 	unsigned char response[128];
 	int err;
+	unsigned char espMsg[McuShell_DEFAULT_SHELL_BUFFER_SIZE] = "";
+	const char espMsgPrefix[] = "@esp:";
+	const char espMsgPostfix[] = "!";
 
 	ESP_LOGI(TAG, "handling incoming message %s", rxMsg);
 	McuUtility_strcpy(response, sizeof(response), (unsigned char*)"OK"); /* default response */
 	/* check framing */
-	if (McuUtility_strncmp(rxMsg, "@esp:", sizeof("@esp:")-1)==0) { /* check prefix */
+	if (McuUtility_strncmp(rxMsg, espMsgPrefix, sizeof(espMsgPrefix)-1)==0) { /* check prefix */
 		size_t strLen = McuUtility_strlen(rxMsg);
 		if (rxMsg[strLen-1]=='!') {
 			/* send to ESP32 shell */
-			rxMsg += sizeof("@esp:")-1;
-			unsigned char *cmd = (unsigned char*)calloc(strLen, sizeof(unsigned char));
-			if(cmd != NULL){
-				size_t cmdLen = strLen-(sizeof("@esp:")-1)-1;
-				McuUtility_strcpy(cmd, cmdLen, (const unsigned char *)rxMsg);
-				SHELL_SendToESPAndGetResponse((unsigned char*)cmd, response, sizeof(response));
-			}else{
-				McuUtility_strcpy(response, sizeof(response), (unsigned char*)"Failed to parse cmd!");
+			for(int i = 0; i < strLen-McuUtility_strlen(espMsgPrefix)-McuUtility_strlen(espMsgPostfix); i++){
+				espMsg[i] = rxMsg[i + McuUtility_strlen(espMsgPrefix)];
 			}
-
+			SHELL_SendToESPAndGetResponse(espMsg, response, sizeof(response));
 		} else {
 			McuUtility_strcpy(response, sizeof(response), (unsigned char*)"!missing!");
 		}
@@ -75,6 +72,8 @@ void HandleIncomingUdpMessage(const char *rxMsg, int sock, struct sockaddr *sour
 
 
 
+
+
 static void udp_server_task(void *pvParameters) {
   char rx_buffer[128];
   char addr_str[128];