Is synchronous network communication possible on C -


i new networking concepts in c, , wondering following.

say have client , server.

on client side, have such code:

   1. send(connfd, var1, var1size);     2. read(connfd, &x, size1);     3. close(connfd);

the server one receive , one send, e.g., 

   1. read(connfd, &var, size);     2. send(connfd, var1, varsize);

my question following. on client side, after client send -- takes time before data arrives @ server, before server reads it, , sends right?

so not happen after client code runs send, directly jumps read, time, server has not yet managed prepare response , send -- read call on client side (line 2), receive nothing. , connection terminate right? (program exit).

is how may happen?

this has nothing c, it's how networking protocols , i/o work.

the answer unless go out of way make i/o non-blocking, send() , recv() calls synchronous, i.e. block if necessary, wait available outgoing bandwidth or incoming data.

so case describe typically not happen, connection not terminate.


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