def resolveHostName( self, resolutionReceiver, hostName, portNumber=0, addressTypes=None, transportSemantics="TCP", ): """ See L{IHostnameResolver.resolveHostName} @param resolutionReceiver: see interface @param hostName: see interface @param portNumber: see interface @param addressTypes: see interface @param transportSemantics: see interface @return: see interface """ # If it's str, we need to make sure that it's just ASCII. try: hostName = hostName.encode("ascii") except UnicodeEncodeError: # If it's not just ASCII, IDNA it. We don't want to give a Unicode # string with non-ASCII in it to Python 3, as if anyone passes that # to a Python 3 stdlib function, it will probably use the wrong # IDNA version and break absolutely everything hostName = _idnaBytes(hostName) # Make sure it's passed down as a native str, to maintain the interface hostName = nativeString(hostName) resolution = HostResolution(hostName) resolutionReceiver.resolutionBegan(resolution) onAddress = self._simpleResolver.getHostByName(hostName) def addressReceived(address): resolutionReceiver.addressResolved( IPv4Address("TCP", address, portNumber)) def errorReceived(error): if not error.check(DNSLookupError): self._log.failure( "while looking up {name} with {resolver}", error, name=hostName, resolver=self._simpleResolver, ) onAddress.addCallbacks(addressReceived, errorReceived) def finish(result): resolutionReceiver.resolutionComplete() onAddress.addCallback(finish) return resolution
def resolveHostName(self, resolutionReceiver, hostName, portNumber=0, addressTypes=None, transportSemantics='TCP'): """ See L{IHostnameResolver.resolveHostName} @param resolutionReceiver: see interface @param hostName: see interface @param portNumber: see interface @param addressTypes: see interface @param transportSemantics: see interface @return: see interface """ # If it's str, we need to make sure that it's just ASCII. try: hostName = hostName.encode('ascii') except UnicodeEncodeError: # If it's not just ASCII, IDNA it. We don't want to give a Unicode # string with non-ASCII in it to Python 3, as if anyone passes that # to a Python 3 stdlib function, it will probably use the wrong # IDNA version and break absolutely everything hostName = _idnaBytes(hostName) # Make sure it's passed down as a native str, to maintain the interface hostName = nativeString(hostName) resolution = HostResolution(hostName) resolutionReceiver.resolutionBegan(resolution) onAddress = self._simpleResolver.getHostByName(hostName) def addressReceived(address): resolutionReceiver.addressResolved(IPv4Address('TCP', address, portNumber)) def errorReceived(error): if not error.check(DNSLookupError): self._log.failure("while looking up {name} with {resolver}", error, name=hostName, resolver=self._simpleResolver) onAddress.addCallbacks(addressReceived, errorReceived) def finish(result): resolutionReceiver.resolutionComplete() onAddress.addCallback(finish) return resolution