H iWill Miles,

Thank you for the information.

I tried using below code but it's not working. On client side if i remove "TimerTimeout()", messsage sending is getting 
is succeeded and blocked infinitely, but if i keep the same PIcall with 5 sec time, MsgSend() is unblocking immediately.
 

Server side:
na = name_attach(NULL, D_Name, 0);
MsgReceive(na->chid, &buf, sizeof(buf), NULL);

Client side:
coid = name_open(D_Name, 0);
TimerTimeout(CLOCK_REALTIME , _NTO_TIMEOUT_SEND | _NTO_TIMEOUT_REPLY, &sigeven_st, &timeout, NULL);
MsgSend(coid, &snd_buf, sizeof(snd_buf), &rcv_buf, sizeof(rcv_buf));


Thanks
Sai