Adding iPhone support (since iPhone doesn't currently support IPv6)

AsyncSocket.m

@@ -14,6 +14,10 @@
 #import <arpa/inet.h>
 #import <netdb.h>
 
+#if TARGET_OS_IPHONE
+#import <CFNetwork/CFNetwork.h>
+#endif
+
 #pragma mark Declarations
 
 #define READQUEUE_CAPACITY	5           // Initial capacity
@@ -490,7 +494,12 @@ - (BOOL)acceptOnAddress:(NSString *)hostaddr port:(UInt16)port error:(NSError **
 	if (address6)
 	{
 		theSocket6 = [self createAcceptSocketForAddress:address6 error:errPtr];
+
+		// Note: The iPhone doesn't currently support IPv6
+
+#if !TARGET_OS_IPHONE
 		if (theSocket6 == NULL) goto Failed;
+#endif
 	}
 
 	// Attach the sockets to the run loop so that callback methods work