Clone client, Model Two in C

// Clone client - Model Two

// Lets us build this source without creating a library
#include "kvsimple.c"

int main (void)
{
// Prepare our context and subscriber
zctx_t *ctx = zctx_new ();
void *snapshot = zsocket_new (ctx, ZMQ_DEALER);
zsocket_connect (snapshot, "tcp://localhost:5556");
void *subscriber = zsocket_new (ctx, ZMQ_SUB);
zsocket_set_subscribe (subscriber, "");
zsocket_connect (subscriber, "tcp://localhost:5557");

zhash_t *kvmap = zhash_new ();

// Get state snapshot
int64_t sequence = 0;
zstr_send (snapshot, "ICANHAZ?");
while (true) {
kvmsg_t *kvmsg = kvmsg_recv (snapshot);
if (!kvmsg)
break; // Interrupted
if (streq (kvmsg_key (kvmsg), "KTHXBAI")) {
sequence = kvmsg_sequence (kvmsg);
printf ("Received snapshot=%d\n", (int) sequence);
kvmsg_destroy (&kvmsg);
break; // Done
}
kvmsg_store (&kvmsg, kvmap);
}
// Now apply pending updates, discard out-of-sequence messages
while (!zctx_interrupted) {
kvmsg_t *kvmsg = kvmsg_recv (subscriber);
if (!kvmsg)
break; // Interrupted
if (kvmsg_sequence (kvmsg) > sequence) {
sequence = kvmsg_sequence (kvmsg);
kvmsg_store (&kvmsg, kvmap);
}
else
kvmsg_destroy (&kvmsg);
}
zhash_destroy (&kvmap);
zctx_destroy (&ctx);
return 0;
}