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#include <osmocom/core/msgb.h>
#include <osmocom/core/select.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <string.h>
#include <talloc.h>
#include <unistd.h>
#include "../../src/osmo-bts-virtual/virtual_um.h"
static char *rx_mcast_group = "224.0.0.1";
static int rx_mcast_port = 6666;
static char *tx_mcast_group = "225.0.0.1";
static int tx_mcast_port = 6667;
static void virt_um_rx_cb(struct virt_um_inst *vui, struct msgb *msg)
{
char addrbuf[32];
inet_ntop(AF_INET, &vui->mcast_sock->rx_sock->mcast_group->imr_multiaddr, addrbuf, 32);
printf("Received ACK from MS(%s): \"%s\"\n", addrbuf, msgb_data(msg));
}
// main prog for a client program continuously receiving data from a multicast socket and responding to them answers on another
int main(void)
{
int i = 0;
struct virt_um_inst *vui = virt_um_init(NULL, tx_mcast_group,
tx_mcast_port, rx_mcast_group, rx_mcast_port,
virt_um_rx_cb);
if (!vui) {
perror("Error initializing vui.");
}
while (++i < 1000) {
struct msgb *outmsg = msgb_alloc(VIRT_UM_MSGB_SIZE,
"Virtual UM Rx");
char strbuf[64], addrbuf[32], *data_loc;
int port, rc;
sprintf(strbuf, "MSG: (%u)", i);
data_loc = (char *)msgb_put(outmsg, strlen(strbuf)+1);
memcpy(data_loc, strbuf, strlen(strbuf)+1);
rc = virt_um_write_msg(vui, outmsg);
inet_ntop(AF_INET, &vui->mcast_sock->tx_sock->sock_conf->sin_addr, addrbuf, 32);
port = vui->mcast_sock->tx_sock->sock_conf->sin_port;
if (rc < 0) {
perror("Error sending MSG");
} else if (rc == 0) {
printf("Nothing sent: \"%s\"\n", msgb_data(outmsg));
} else {
printf("Sent MSG to MS(%s:%d): \"%s\"\n", addrbuf, port, msgb_data(outmsg));
}
// receive all pending acks
while(osmo_select_main(1));
sleep(1);
}
virt_um_destroy(vui);
return 0;
}
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