On Apr 13, 2015, at 3:44 PM, Josh Graessley <jgraessley@apple.com> wrote:
On Apr 13, 2015, at 1:25 PM, Jens Alfke <jens@mooseyard.com> wrote:
On Apr 13, 2015, at 10:12 AM, Jeff Johnson <publicposting@lapcatsoftware.com> wrote:
I want the host and port is to send a "Host" header. I might be able to get away without it, but I'd prefer to adhere to standards.
I ended up having to implement this earlier today; here’s the code I came up with. “_inputStream” is an NSInputStream opened on a TCP socket. Disclaimer: I haven’t tested it much yet, and not at all with IPv6 addresses.
- (NSString*) remoteHost { // First recover the socket handle from the stream: NSData* handleData = CFBridgingRelease(CFReadStreamCopyProperty( (__bridge CFReadStreamRef)_inputStream, kCFStreamPropertySocketNativeHandle)); if (!handleData || handleData.length != sizeof(CFSocketNativeHandle)) return nil; CFSocketNativeHandle socketHandle = *(const CFSocketNativeHandle*)handleData.bytes; // Get the remote/peer address in binary form: struct sockaddr_in addr; unsigned addrLen = sizeof(addr); if (getpeername(socketHandle, (struct sockaddr*)&addr,&addrLen) < 0) return nil; // Format it in readable (e.g. dotted-quad) form, with the port number: char nameBuf[INET6_ADDRSTRLEN]; if (inet_ntop(addr.sin_family, &addr.sin_addr, nameBuf, (socklen_t)sizeof(nameBuf)) == NULL) return nil; return [NSString stringWithFormat: @"%s:%hu", nameBuf, ntohs(addr.sin_port)]; }
This seems sub-optimal as there can be many hostnames that resolve to a single address. A reverse-lookup of the address will yield one of those hostnames, but it might not be the one you’re looking for.
Also, what does this do if you connect through a proxy? The native handle could be a socket to a SOCKS (or other) proxy, right?
A radar requesting a better way to do this might be a good idea. If you file one, please forward me the radar #, thanks.
-josh
Josh, do you have any insight into my original issue? _______________________________________________ Do not post admin requests to the list. They will be ignored. Macnetworkprog mailing list (Macnetworkprog@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/macnetworkprog/site_archiver%40lists... This email sent to site_archiver@lists.apple.com