python - Not able to calling NSStreamEventHasBytesAvailable -

i've written server python (twisted). have connected server , sending data server i'm not getting data server , nsstreameventhasbytesavailable not getting called.

this how connect server:

cfstreamcreatepairwithsockettohost(null, (cfstringref)@"localhost", 3000, &readstream, &writestream); inputstream = (nsinputstream *)readstream; outputstream = (nsoutputstream *)writestream; [inputstream setdelegate:self]; [outputstream setdelegate:self]; [inputstream scheduleinrunloop:[nsrunloop currentrunloop] formode:nsdefaultrunloopmode]; [outputstream scheduleinrunloop:[nsrunloop currentrunloop] formode:nsdefaultrunloopmode]; [inputstream open]; [outputstream open]; 

here problem:

-(void)stream:(nsstream *)thestream handleevent:(nsstreamevent)streamevent {      nsstring *event;      switch (streamevent)      {          case nsstreameventhasbytesavailable:          event = @"nsstreameventhasbytesavailable";          if (thestream == inputstream)          {              uint8_t buffer[1024];              int len;              while ([inputstream hasbytesavailable])              {                 nslog(@"input =====%@",inputstream);                  len = [inputstream read:buffer maxlength:1024];                 nslog(@"len -=======%d",len);                 if (len > 0)                 {                     nsmutablestring *output = [[nsmutablestring alloc] initwithbytes:buffer length:len encoding:nsutf8stringencoding];                     nslog(@"received data--------------------%@", output);                 }              }         }         break;     } } 

this server side code:

from twisted.internet.protocol import factory, protocol twisted.internet import reactor  class iphonechat(protocol):     def connectionmade(self):         self.factory.clients.append(self)         print "clients ", self.factory.clients      def connectionlost(self, reason):         self.factory.clients.remove(self)      def datareceived(self, data):         = data.split(':')         print         if len(a) > 1:            command = a[0]            content = a[1]             msg = ""            if command == "msg":                msg = content                print msg      def message(self, message):         self.transport.write(message + '\n')          c in self.factory.clients:             c.message(msg)  factory = factory() factory.protocol = iphonechat factory.clients = [] reactor.listentcp(650, factory) print "iphone chat server started" reactor.run() 

i have tried lot , googled,but did not find solution. it's killing time if 1 have worked on please guide me , post sample code. in advance.

i don't know iphone, find things wrong server. i'd rather write as

from twisted.internet.protocol import factory, protocol twisted.internet import reactor  class iphonechat(protocol):     def connectionmade(self):         self.factory.clients.append(self)         print "clients ", self.factory.clients      def connectionlost(self, reason):         self.factory.clients.remove(self)      def datareceived(self, data):         = data.split(':')         print         if len(a) > 1:            command = a[0]            content = a[1]             msg = ""            if command == "msg":                msg = content                self.message(msg)                print msg      def message(self, message):         c in self.factory.clients:             c.transport.write(message + '\n')  factory = factory() factory.protocol = iphonechat factory.clients = [] reactor.listentcp(650, factory) print "iphone chat server started" reactor.run() 

when tested out telnet client, worked out well.