106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/**
|
|
* libzt C API example
|
|
*
|
|
* Simple socket-based client application
|
|
*/
|
|
|
|
#include "ZeroTierSockets.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
if (argc != 5) {
|
|
printf("\nlibzt example client\n");
|
|
printf("client <id_storage_path> <net_id> <remote_addr> <remote_port>\n");
|
|
exit(0);
|
|
}
|
|
char* storage_path = argv[1];
|
|
long long int net_id = strtoull(argv[2], NULL, 16); // At least 64 bits
|
|
char* remote_addr = argv[3];
|
|
int remote_port = atoi(argv[4]);
|
|
int err = ZTS_ERR_OK;
|
|
|
|
// Initialize node
|
|
|
|
if ((err = zts_init_from_storage(storage_path)) != ZTS_ERR_OK) {
|
|
printf("Unable to start service, error = %d. Exiting.\n", err);
|
|
exit(1);
|
|
}
|
|
|
|
// Start node
|
|
|
|
if ((err = zts_node_start()) != ZTS_ERR_OK) {
|
|
printf("Unable to start service, error = %d. Exiting.\n", err);
|
|
exit(1);
|
|
}
|
|
printf("Waiting for node to come online\n");
|
|
while (! zts_node_is_online()) {
|
|
zts_util_delay(50);
|
|
}
|
|
printf("Public identity (node ID) is %llx\n", (long long int)zts_node_get_id());
|
|
|
|
// Join network
|
|
|
|
printf("Joining network %llx\n", net_id);
|
|
if (zts_net_join(net_id) != ZTS_ERR_OK) {
|
|
printf("Unable to join network. Exiting.\n");
|
|
exit(1);
|
|
}
|
|
printf("Don't forget to authorize this device in my.zerotier.com or the web API!\n");
|
|
printf("Waiting for join to complete\n");
|
|
while (! zts_net_transport_is_ready(net_id)) {
|
|
zts_util_delay(50);
|
|
}
|
|
|
|
// Get assigned address (of the family type we care about)
|
|
|
|
int family = zts_util_get_ip_family(remote_addr);
|
|
|
|
printf("Waiting for address assignment from network\n");
|
|
while (! (err = zts_addr_is_assigned(net_id, family))) {
|
|
zts_util_delay(50);
|
|
}
|
|
char ipstr[ZTS_IP_MAX_STR_LEN] = { 0 };
|
|
zts_addr_get_str(net_id, family, ipstr, ZTS_IP_MAX_STR_LEN);
|
|
printf("IP address on network %llx is %s\n", net_id, ipstr);
|
|
|
|
// BEGIN Socket Stuff
|
|
|
|
char* msgStr = (char*)"Welcome to the machine";
|
|
int bytes = 0, fd;
|
|
char recvBuf[128] = { 0 };
|
|
memset(recvBuf, 0, sizeof(recvBuf));
|
|
|
|
// Connect to remote host
|
|
|
|
// Can also use traditional: zts_socket(), zts_connect(), etc
|
|
|
|
printf("Attempting to connect...\n");
|
|
while ((fd = zts_simple_tcp_client(remote_addr, remote_port)) < 0) {
|
|
printf("Re-attempting to connect...\n");
|
|
}
|
|
|
|
// Data I/O
|
|
|
|
printf("Sending message string to server...\n");
|
|
if ((bytes = zts_write(fd, msgStr, strlen(msgStr))) < 0) {
|
|
printf("Error (fd=%d, ret=%d, zts_errno=%d). Exiting.\n", fd, bytes, zts_errno);
|
|
exit(1);
|
|
}
|
|
printf("Sent %d bytes: %s\n", bytes, msgStr);
|
|
printf("Reading message string from server...\n");
|
|
if ((bytes = zts_read(fd, recvBuf, sizeof(recvBuf))) < 0) {
|
|
printf("Error (fd=%d, ret=%d, zts_errno=%d). Exiting.\n", fd, bytes, zts_errno);
|
|
exit(1);
|
|
}
|
|
printf("Read %d bytes: %s\n", bytes, recvBuf);
|
|
|
|
// Close
|
|
|
|
zts_close(fd);
|
|
return zts_node_stop();
|
|
}
|