Request 

```
echo -e "GET /version HTTP/1.0\r\n" | nc -U /var/run/docker.sock
```

Response

```
HTTP/1.0 200 OK
Api-Version: 1.27
Content-Type: application/json
Docker-Experimental: false
Server: Docker/17.03.1-ce (linux)
Date: Thu, 01 Feb 2018 12:00:06 GMT
Content-Length: 225

{"Version":"17.03.1-ce","ApiVersion":"1.27","MinAPIVersion":"1.12","GitCommit":"c6d412e","GoVersion":"go1.7.5","Os":"linux","Arch":"amd64","KernelVersion":"4.4.0-79-generic","BuildTime":"2017-03-27T17:14:09.765618756+00:00"}
```