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// Comprehensive stress test for socket-like API
#include <stdio.h>
#include <unistd.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <arpa/inet.h>
#include <string.h>
#include <netinet/in.h>
#include <netdb.h>
#include "ZeroTierSDK.h"
int main()
{
char *nwid = (char *)"e5cd7a9e1c0fd272";
// Get ZeroTier core version
char ver[ZT_VER_STR_LEN];
zts_core_version(ver);
printf("zts_core_version = %s\n", ver);
// Get SDK version
zts_sdk_version(ver);
printf("zts_sdk_version = %s\n", ver);
// Spawns a couple threads to support ZeroTier core, userspace network stack, and generates ID in ./zt
zts_start("./zt");
// Print the device/app ID (this is also the ID you'd see in ZeroTier Central)
char id[ZT_ID_LEN + 1];
zts_get_device_id(id);
printf("id = %s\n", id);
// Get the home path of this ZeroTier instance, where we store identity keys, conf files, etc
char homePath[ZT_HOME_PATH_MAX_LEN+1];
zts_get_homepath(homePath, ZT_HOME_PATH_MAX_LEN);
printf("homePath = %s\n", homePath);
// Wait for ZeroTier service to start
while(!zts_service_running()) {
printf("wating for service to start\n");
sleep(1);
}
// Join a network
zts_join_network(nwid);
// Wait for ZeroTier service to issue an address to the device on the given network
while(!zts_has_address("e5cd7a9e1c0fd272")) {
printf("waiting for service to issue an address\n");
sleep(1);
}
// Begin Socket API calls
int err;
int sockfd;
int port = 7878;
struct sockaddr_in addr;
// socket()
if((sockfd = zts_socket(AF_INET, SOCK_STREAM, 0)) < 0)
printf("error creating ZeroTier socket");
else
printf("sockfd = %d\n", sockfd);
// connect() IPv6
if(false)
{
struct hostent *server = gethostbyname2("fde5:cd7a:9e1c:0fd2:7299:9367:5993:3b86",AF_INET6);
struct sockaddr_in6 serv_addr;
memset((char *) &serv_addr, 0, sizeof(serv_addr));
serv_addr.sin6_flowinfo = 0;
serv_addr.sin6_family = AF_INET6;
memmove((char *) &serv_addr.sin6_addr.s6_addr, (char *) server->h_addr, server->h_length);
serv_addr.sin6_port = htons( port );
if((err = zts_connect(sockfd, (struct sockaddr *) &serv_addr, sizeof(serv_addr))) < 0) {
printf("error connecting to remote host (%d)\n", err);
return -1;
}
}
// connect() IPv4
if(true)
{
addr.sin_addr.s_addr = inet_addr("10.9.9.20");
addr.sin_family = AF_INET;
addr.sin_port = htons( port );
if((err = zts_connect(sockfd, (const struct sockaddr *)&addr, sizeof(addr))) < 0) {
printf("error connecting to remote host (%d)\n", err);
return -1;
}
zts_write(sockfd, "hello", 5);
sleep(3);
zts_close(sockfd);
}
// bind() ipv4
if(false)
{
//addr.sin_addr.s_addr = INADDR_ANY; // TODO: Requires significant socket multiplexer work
addr.sin_addr.s_addr = inet_addr("10.9.9.40");
addr.sin_family = AF_INET;
addr.sin_port = htons( port );
if((err = zts_bind(sockfd, (const struct sockaddr *)&addr, sizeof(addr))) < 0) {
printf("error binding to interface (%d)\n", err);
return -1;
}
zts_listen(sockfd, 1);
struct sockaddr_in client;
int c = sizeof(struct sockaddr_in);
int accept_fd = zts_accept(sockfd, (struct sockaddr *)&client, (socklen_t*)&c);
printf("reading from buffer\n");
char newbuf[32];
memset(newbuf, 0, 32);
read(accept_fd, newbuf, 20);
printf("newbuf = %s\n", newbuf);
}
// End Socket API calls
// Get the ipv4 address assigned for this network
char addr_str[ZT_MAX_IPADDR_LEN];
zts_get_ipv4_address(nwid, addr_str, ZT_MAX_IPADDR_LEN);
printf("ipv4 = %s\n", addr_str);
zts_get_ipv6_address(nwid, addr_str, ZT_MAX_IPADDR_LEN);
printf("ipv6 = %s\n", addr_str);
printf("peer_count = %lu\n", zts_get_peer_count());
while(1)
{
sleep(1);
}
// ---
/*
"Tap Multiplexer"
- socket() [BEFORE JOIN]: take requests for new sockets
- Create them, and store them in a temporary holding space until we find out where we should assign them
- connect():
- Search SocketTaps for tap with a relevant route
- None? -> ENETUNREACH
- Found?
- Assign previously-held socket to this tap
- Attempt connection
- bind():
- bind on all Interfaces?
Join Semantics
- Create : SocketTap
- Create : rpc.d/nwid unix domain socket (if intercept mode?)
- Create : Stack Interface
- Provide : IPs to Interface
/--- int0: 10. 9.0.0
stack ---- int1: 172.27.0.0
\--- int2: ?
*/
// zts_join("other_network"); // 10.9.0.0
// zts_join("whatever"); // 172.27.0.0
//zts_socket(AF, STREAM, 0);
//zts_connect("10.9.9.5");
// ---
// Stop service, delete tap interfaces, and network stack
zts_stop();
return 0;
}
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