Lazy Pirate client in C

#include <czmq.h>
#define REQUEST_TIMEOUT 2500 // msecs, (>1000!)
#define REQUEST_RETRIES 3 // Before we abandon
#define SERVER_ENDPOINT "tcp://localhost:5555"

int main()
{
zsock_t *client = zsock_new_req(SERVER_ENDPOINT);
printf("I: Connecting to server…\n");
assert(client);

int sequence = 0;
int retries_left = REQUEST_RETRIES;
printf("Entering while loop…\n");
while(retries_left) // interrupt needs to be handled
{
// We send a request, then we get a reply
char request[10];
sprintf(request, "%d", ++sequence);
zstr_send(client, request);
int expect_reply = 1;
while(expect_reply)
{
printf("Expecting reply….\n");
zmq_pollitem_t items [] = zsock_resolve(client), 0, ZMQ_POLLIN, 0;
printf("After polling\n");
int rc = zmq_poll(items, 1, REQUEST_TIMEOUT * ZMQ_POLL_MSEC);
printf("Polling Done.. \n");
if (rc == -1)
break; // Interrupted

// Here we process a server reply and exit our loop if the
// reply is valid. If we didn't get a reply we close the
// client socket, open it again and resend the request. We
// try a number times before finally abandoning:

if (items[0].revents & ZMQ_POLLIN)
{
// We got a reply from the server, must match sequence
char *reply = zstr_recv(client);
if(!reply)
break; // interrupted
if (atoi(reply) == sequence)
{
printf("I: server replied OK (%s)\n", reply);
retries_left=REQUEST_RETRIES;
expect_reply = 0;
}
else
{
printf("E: malformed reply from server: %s\n", reply);
}
free(reply);
}
else
{
if(--retries_left == 0)
{
printf("E: Server seems to be offline, abandoning\n");
break;
}
else
{
printf("W: no response from server, retrying…\n");
zsock_destroy(&client);
printf("I: reconnecting to server…\n");
client = zsock_new_req(SERVER_ENDPOINT);
zstr_send(client, request);
}
}
}
zsock_destroy(&client);
return 0;
}
}