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https://github.com/pebbe/zmq4

A Go interface to ZeroMQ version 4
https://github.com/pebbe/zmq4

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A Go interface to ZeroMQ version 4

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A Go interface to [ZeroMQ](http://www.zeromq.org/) version 4.



----------------------------------------------------------------



## Warning



Starting with Go 1.14, on Unix-like systems, you will get a lot of

interrupted signal calls. See the top of a package documentation

for a fix.



----------------------------------------------------------------



[![Go Report Card](https://goreportcard.com/badge/github.com/pebbe/zmq4)](https://goreportcard.com/report/github.com/pebbe/zmq4)

[![GoDoc](https://godoc.org/github.com/pebbe/zmq4?status.svg)](https://godoc.org/github.com/pebbe/zmq4)



This requires ZeroMQ version 4.0.1 or above. To use CURVE security in

versions prior to 4.2, ZeroMQ must be installed with

[libsodium](https://github.com/jedisct1/libsodium) enabled.



Partial support for ZeroMQ 4.2 DRAFT is available in the alternate

version of zmq4 `draft`. The API pertaining to this is subject to

change. To use this:



    import (

        zmq "github.com/pebbe/zmq4/draft"

    )



For ZeroMQ version 3, see: http://github.com/pebbe/zmq3



For ZeroMQ version 2, see: http://github.com/pebbe/zmq2



Including all examples of [ØMQ - The Guide](http://zguide.zeromq.org/page:all).



Keywords: zmq, zeromq, 0mq, networks, distributed computing, message passing, fanout, pubsub, pipeline, request-reply



### See also



 * [go-zeromq/zmq4](https://github.com/go-zeromq/zmq4) — A pure-Go implementation of ØMQ (ZeroMQ), version 4

 * [go-nanomsg](https://github.com/op/go-nanomsg) — Language bindings for nanomsg in Go

 * [goczmq](https://github.com/zeromq/goczmq) — A Go interface to CZMQ

 * [Mangos](https://github.com/go-mangos/mangos) — An implementation in pure Go of the SP ("Scalable Protocols") protocols



## Requirements



zmq4 is just a wrapper for the ZeroMQ library. It doesn't include the

library itself. So you need to have ZeroMQ installed, including its

development files. On Linux and Darwin you can check this with (`$` is

the command prompt):



```

$ pkg-config --modversion libzmq

4.3.1

```



The Go compiler must be able to compile C code. You can check this

with:

```

$ go env CGO_ENABLED

1

```



You can't do cross-compilation. That would disable C.



### Windows



Build with `CGO_CFLAGS` and `CGO_LDFLAGS` environment variables, for example:



```

$env:CGO_CFLAGS='-ID:/dev/vcpkg/installed/x64-windows/include'

$env:CGO_LDFLAGS='-LD:/dev/vcpkg/installed/x64-windows/lib -l:libzmq-mt-4_3_4.lib'

```

> Deploy result program with `libzmq-mt-4_3_4.dll`



## Install



    go get github.com/pebbe/zmq4



## Docs



 * [package help](http://godoc.org/github.com/pebbe/zmq4)

 * [wiki](https://github.com/pebbe/zmq4/wiki)



## API change



There has been an API change in commit

0bc5ab465849847b0556295d9a2023295c4d169e of 2014-06-27, 10:17:55 UTC

in the functions `AuthAllow` and `AuthDeny`.



Old:



    func AuthAllow(addresses ...string)

    func AuthDeny(addresses ...string)



New:



    func AuthAllow(domain string, addresses ...string)

    func AuthDeny(domain string, addresses ...string)



If `domain` can be parsed as an IP address, it will be interpreted as

such, and it and all remaining addresses are added to all domains.



So this should still work as before:



    zmq.AuthAllow("127.0.0.1", "123.123.123.123")



But this won't compile:



    a := []string{"127.0.0.1", "123.123.123.123"}

    zmq.AuthAllow(a...)



And needs to be rewritten as:



    a := []string{"127.0.0.1", "123.123.123.123"}

    zmq.AuthAllow("*", a...)



Furthermore, an address can now be a single IP address, as well as an IP

address and mask in CIDR notation, e.g. "123.123.123.0/24".