connect() returns "Network unreachable", but it isn't??

Hi all,
What would lead connect() to fail and return "Network unreachable"? What I'm trying to do is send a brief msg through port 80 to www.nerrenvirons.org from inside my firewall. I can websurf there, traceroute there, etc.., so as far as I can tell, the network CAN be reached. However whenever I execute this code, I always get "Network unreachable".

Both destination and source are running Apache -- but that means port 80 MUST be open, since I can http://www.nerrenvirons.org, right?

Here's my code. Any ideas??

Code:

    
   //now open a socket to homebase so we can transmit the data
   if ((sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
   {
      Log("While trying to open a socket to home base, it failed");
      delete data;
      return (FALSE);
   } //end if
    
   //resolve our hostname into a host struct to get the IP address
   struct hostent *hostStructure = gethostbyname(repositoryURL);

   //construct the server address structure 
   memset(&ServerAddress, 0, sizeof(ServerAddress));     // zero out the structure to begin with
   ServerAddress.sin_family      = AF_INET;            
   ServerAddress.sin_addr.s_addr = inet_addr(hostStructure->h_addr_list[0]); //just try the first address 
   ServerAddress.sin_port        = htons(repositoryPort); 
         
   JString msg = "GET blah";
   Log("Sending this to home base: " + msg);   
   
   // now establish the actual connection to home base
   if (connect(sock, (struct sockaddr *) &ServerAddress, sizeof(ServerAddress)) < 0)
   {
      Log("Connect failed - " + (JString)strerror(errno));
      Log(hostStructure->h_addr_list[0]);
      delete data;
      return (FALSE);
   } //end if

Now when I set a break-point right before connect is called, these are the values, which SEEM to make sense:

hostStructure->h_name="grampus.marisys.com"
hostStructure.h_aliases[0] = "www.nerrenvirons.org"

ServerAddress.sin_addr = 4294967295

NOTE: www.nerrenvirons.org sites behind a proxy server called grampus.marisys.com.

Any ideas?? Thanks for any help.

>>What would lead connect() to fail and return "Network unreachable"?<<
Receipt of an ICMP packet saying so.

>>ServerAddress.sin_addr = 4294967295
That number equates to 255.255.255.255

http://www.ecst.csuchico.edu/~beej/guide/net_old/#dns

Thanks! Your link explained everything, it works fine now.

Now I keep getting HTTP errors since I assume I'm not building my HTTP request headers properly. Know of any beginner's links to HTTP? Reading the RFC is a little overwhelming.

Thanks again for your help.