libzt

Embed ZeroTier directly into your app

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A library version of the popular ZeroTier One, libzt makes it easy to securely connect devices, servers, cloud VMs, containers, and apps everywhere and manage them at scale. Now you can bake this ability directly into your app or service using your preferred language or framework. We provide a BSD socket-like API supporting SOCK_STREAM, SOCK_DGRAM, and SOCK_RAW to make the integration simple. There's also no longer any need for system-wide virtual interfaces. This connection is exclusive to your app and fully encrypted via the Salsa20 cipher.

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Pre-Built Binaries Here: zerotier.com/download.shtml.

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Example

#include "libzt.h"

char *str = "welcome to the machine"; // test msg 
char *nwid = "c7cd7c9e1b0f52a2";      // network to join
char *path = "zt1";                   // path where this node's keys and configs will be stored
char *ip = "10.8.8.42";               // host on ZeroTier network
int port = 8080;                      // resource's port

struct sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_addr.s_addr = inet_addr(ip);
addr.sin_port = hton(port);	

zts_simple_start(path, nwid);
int fd = zts_socket(AF_INET, SOCK_STREAM, 0);
zts_connect(fd, (const struct sockaddr *)addr, sizeof(addr));
zts_write(fd, str, strlen(str));
zts_close(fd);

Bindings for various languages

For an example using only the Virtual Layer 2, see test/layer2.cpp

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Building (linux, macos, bsd, win, ios)

git submodule init
git submodule update
make static_lib

All targets will output to build/. Complete instructions here

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Testing and Debugging

• See TESTING.md

Licensing

• For a BSD license, build using the lwIP network stack with STACK_LWIP=1
• For a GPL license, build using the picoTCP network stack with STACK_PICO=1

Regardless of which network stack you build with, the socket API will remain the same.