Add routine to read and match bytes received. (Essentially strcmp replacement without requiring a large receive buffer.) Note that failed matches drop any bytes matched successfully.

git-svn-id: svn+ssh://oldsvn/home/mlalondesvn/svn/cral@79 3ee9b42a-b53c-0410-a25e-f0b6218d5d5b

branches/follower/wiz810mj/src/demo/WizDemo3/WizDemo3.pde

@@ -200,6 +200,23 @@ uint8_t readByte() {
 }
 
 
+int readMatch(char *stringToMatch) {
+      
+  while (getSn_RX_RSR(testSocket) < strlen(stringToMatch)) {
+     // block
+     // TODO: Return error or wait or "too short"?
+  }
+
+  for (int currCharIdx = 0; currCharIdx < strlen(stringToMatch); currCharIdx++) {
+    if (readByte() != stringToMatch[currCharIdx]) {
+       return 0;
+    }
+  }
+  
+  return 1;
+}
+
+
 void loop() {
   Serial.println("Test W5100 socket...");