libzt

Embed ZeroTier directly into your app

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A library version of ZeroTier, 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. We provide a POSIX-like socket API supporting SOCK_STREAM, SOCK_DGRAM, and SOCK_RAW to make the integration simple. There's no need for system-wide virtual interfaces. This connection is exclusive to your app and fully encrypted via the Salsa20 cipher. For a more in-depth discussion on the technical side of ZeroTier, check out our Manual

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• Bindings for popular languages like Scala, Swift, Java, Python, etc. can be found here

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C++ Example

#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>

#include "libzt.h"

int main() 
{
	char *str = "welcome to the machine";
	char *remoteIp = "10.8.8.42";
	int remotePort = 8080;
	int fd, err = 0;
	struct sockaddr_in addr;
	addr.sin_family = AF_INET;
	addr.sin_addr.s_addr = inet_addr(remoteIp);
	addr.sin_port = htons(remotePort);

	zts_startjoin("path", 0xc7cd7c981b0f52a2); // config path, network ID

	if ((fd = zts_socket(AF_INET, SOCK_STREAM, 0)) < 0) {
		printf("error creating socket\n");
	}
	if ((err = zts_connect(fd, (const struct sockaddr *)&addr, sizeof(addr))) < 0) {
		printf("error connecting to remote host\n");
	}
	if ((err = zts_write(fd, str, strlen(str))) < 0) {
		printf("error writing to socket\n");
	}

	zts_close(fd);
	zts_stop();
	return 0;
}

For an example using only the Virtual Layer 2, see examples/layer2

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Build

We recommend using CMake and clang.

git submodule init
git submodule update
make patch
cmake -H. -Bbuild -DCMAKE_BUILD_TYPE=Debug
cmake --build build 

Builds are placed in bin\lib. Change CMAKE_BUILD_TYPE to Release for a smaller and optimized build.

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Commercial License

If you want a commercial license to use libzt in your product contact us directly via contact@zerotier.com