sockets - How to use CFStreamCreatePairWithSocket using CFSocketNativeHandle -

i trying write socket xmpp, after connection established socket should reestablish connection updated tls settings. problem delegate methods stream.event.opencompleted called on both outputstream , inputstream stream.event.hasspaceavailable not getting called after cfstreamcreatepairwithsocket.

code:-

if tls{  var readstream :unmanaged<cfreadstream>? var writestream:unmanaged<cfwritestream>? reset()  print("establish tls ") tlsenabled = true   let socketdata = cfwritestreamcopyproperty(self.outputstream cfwritestream,                                            cfstreampropertykey.socketnativehandle) as! cfdata   let native = cfsocketnativehandle(cfdatagetbyteptr(socketdata).pointee)     inputstream.close() outputstream.close()  inputstream.remove(from: runloop.current, formode: .defaultrunloopmode) outputstream.remove(from: runloop.current, formode: .defaultrunloopmode) inputstream = nil outputstream = nil     cfstreamcreatepairwithsocket(kcfallocatordefault,                              native,                              &readstream,                              &writestream)     instream             = readstream!.takeretainedvalue() outstream            = writestream!.takeretainedvalue()  instream.delegate    = self outstream.delegate   = self  instream.setproperty(kcfbooleantrue, forkey: kcfstreampropertyshouldclosenativesocket stream.propertykey) outstream.setproperty(kcfbooleantrue, forkey: kcfstreampropertyshouldclosenativesocket stream.propertykey)  instream.setproperty(streamsocketsecuritylevel.negotiatedssl anyobject,                      forkey: stream.propertykey.socketsecuritylevelkey) outstream.setproperty(streamsocketsecuritylevel.negotiatedssl anyobject,                       forkey: stream.propertykey.socketsecuritylevelkey)  let settings: [nsobject: nsobject] = [kcfstreamsslvalidatescertificatechain: nsnumber(value: false),                                       kcfstreamsslpeername: kcfnull] instream.setproperty(settings,                      forkey: kcfstreampropertysslsettings stream.propertykey) outstream.setproperty(settings,                       forkey: kcfstreampropertysslsettings stream.propertykey)   instream.schedule(in: runloop.current, formode:.defaultrunloopmode) outstream.schedule(in:runloop.current, formode:.defaultrunloopmode)  instream.open() outstream.open() 

}

the issue seems creating socket using cfsocket instead of creating native socket handle directly.

modifying code create socket directly using socket(_:_:_) instead of using cfsocket , cfsocketnativehandle results in stream delegate methods being called me.

/**   create sockaddr_in (ipv4) address google.com  note: if need resolve dns hostname, use cfhost  */ var remoteaddress = sockaddr_in() inet_pton(pf_inet,            "207.47.131.217".cstring(using: .utf8),           &sockaddress.sin_addr) sockaddress.sin_port = uint16(443).bigendian sockaddress.sin_family = sa_family_t(af_inet) // create native socket handle, if sockhandle < 0, error occurred, (check errno) let sockhandle = socket(pf_inet, sock_stream, ipproto_tcp) // if connectstatus < 0, error occurred (check errno) let connectstatus = connect(sockhandle,                              &remoteaddress,                              socklen_t(memorylayout<sockaddr_in>.size))  var readstream :unmanaged<cfreadstream>? var writestream:unmanaged<cfwritestream>? cfstreamcreatepairwithsocket(kcfallocatordefault,                              sockhandle,                              &readstream, &writestream)