> On Apr 13, 2015, at 1:25 PM, Jens Alfke <[email protected]> wrote: > > >> On Apr 13, 2015, at 10:12 AM, Jeff Johnson >> <[email protected]> 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 _______________________________________________ Do not post admin requests to the list. They will be ignored. Macnetworkprog mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/macnetworkprog/archive%40mail-archive.com This email sent to [email protected]
