first commit

test/fuzz_parse_ipv6.cpp

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+#include <iostream>
+#include "test_utils.hpp"
+#include "../src/netutils.hpp"
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+extern "C" 
+int LLVMFuzzerTestOneInput(const char *data, 
+                           size_t size) 
+{
+    IPv6 ip;
+    bool ok = ip.parse(data, size);
+
+    char buf[512];
+    if (size < sizeof(buf)) {
+        memcpy(buf, data, size);
+        buf[size] = '\0';
+        struct in6_addr buf2;
+        switch (inet_pton(AF_INET6, buf, &buf2)) {
+            
+            case 1: 
+            test(ok); 
+            test(!memcmp(&ip.data, &buf2, 16));
+            break;
+
+            case 0: 
+            case -1:
+            test(!ok);
+            break;
+        }
+
+    }
+    return 0;  // Values other than 0 and -1 are reserved for future use.
+}