Add some comments to 'readMatch'.

git-svn-id: svn+ssh://oldsvn/home/mlalondesvn/svn/cral@81 3ee9b42a-b53c-0410-a25e-f0b6218d5d5b

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

@@ -201,12 +201,27 @@ uint8_t readByte() {
 
 
 int readMatch(char *stringToMatch) {
+  /*
+
+    Routine to read and match bytes received.
+    
+    (Essentially strcmp replacement without requiring a large receive buffer.)
+    
+    NOTE: Failed matches drop all bytes read so far. (i.e. you can't check for
+          a bunch of possible matches from the same starting position).
+          TODO: Fix this.
+          
+    Note: This blocks if there isn't enough data in the rx buffer.
+    
+  */
       
   while (getSn_RX_RSR(testSocket) < strlen(stringToMatch)) {
      // block
      // TODO: Return error or wait or "too short"?
   }
 
+  // TODO: Do fancy string-matching techniques to avoid reading the whole string
+  //       on non-matches. :-)
   for (int currCharIdx = 0; currCharIdx < strlen(stringToMatch); currCharIdx++) {
     if (readByte() != stringToMatch[currCharIdx]) {
        return 0;