Thread: Connection Refused when trying to Connect TCP UDP connection Simultaneoulsy

Hello ,

I am writing a application to Generate mixed traffic of TCP UDP Protocol. I have written socket program which generate TCP and UDP Stream with input Parameters supplied like Packet Size, Time and number of thread.

When I run to generate alone TCP or UDP , its working fine But When i try to generate a mixed traffic it show error on Sender side by saying Connection Refused. after that Program gets Terminated.

All order of Connection are Same on Both side . Each Connection is at Different port .

Code of Sender for Mixed Traffic is as Follow . Similar Code is at Receiver Side .

Code:

     case 'm':
              {    
              
                 if (NUM_THREADS<2)
                 {
                     printf("\n At least Two Thread are required to run\n");   
                     exit(-1);
                 }
                 
              
         if (NUM_THREADS%2==0)
         {
          UDP_Thread=NUM_THREADS/2;
       TCP_Thread=NUM_THREADS/2;
         }         
         
         else 
         {
          UDP_Thread=NUM_THREADS/2;
       TCP_Thread=NUM_THREADS/2+1;
         }    
         
         
         printf("\n Number of TCP Thread going to Create %d",TCP_Thread);  
     for (t=0;t<TCP_Thread;t++)
         {
          printf("\n Started Thread %d\n",t);
          rc=pthread_create(&tid[t], NULL,Send_tcp,(void*)&port[t]);
          if (rc) 
         {
         printf("ERROR; return code from pthread_create() is %d\n", rc);
         exit(-1);
         }
            printf("\n Started Sending for Port No %d",port[t]);
         }     
         
        
    printf("\n Number of UDP Thread going to Create %d",UDP_Thread);   
    for (t=0;t<UDP_Thread;t++)
         {
          printf("\n Started Thread %d\n",TCP_Thread+t);
          rc=pthread_create(&tid[t], NULL,Send_udp,(void*)&port[TCP_Thread+t]);
          if (rc) 
         {
         printf("ERROR; return code from pthread_create() is %d\n", rc);
         exit(-1);
         }
            printf("\n Started Sending for Port No %d",port[TCP_Thread+t]);
         }