package client

import (
	"fmt"

	"github.com/docker/docker/api/types"
	"golang.org/x/net/context"
)

// Ping pings the server and returns the value of the "Docker-Experimental", "OS-Type" & "API-Version" headers
func (cli *Client) Ping(ctx context.Context) (types.Ping, error) {
	var ping types.Ping
	req, err := cli.buildRequest("GET", fmt.Sprintf("%s/_ping", cli.basePath), nil, nil)
	if err != nil {
		return ping, err
	}
	serverResp, err := cli.doRequest(ctx, req)
	if err != nil {
		return ping, err
	}
	defer ensureReaderClosed(serverResp)

	ping.APIVersion = serverResp.header.Get("API-Version")

	if serverResp.header.Get("Docker-Experimental") == "true" {
		ping.Experimental = true
	}

	ping.OSType = serverResp.header.Get("OSType")

	return ping, nil
}

package client

import (
	"fmt"

	"github.com/docker/docker/api/types"
	"golang.org/x/net/context"
)

// Ping pings the server and returns the value of the "Docker-Experimental" & "API-Version" headers
func (cli *Client) Ping(ctx context.Context) (types.Ping, error) {
	var ping types.Ping
	req, err := cli.buildRequest("GET", fmt.Sprintf("%s/_ping", cli.basePath), nil, nil)
	if err != nil {
		return ping, err
	}
	serverResp, err := cli.doRequest(ctx, req)
	if err != nil {
		return ping, err
	}
	defer ensureReaderClosed(serverResp)

	ping.APIVersion = serverResp.header.Get("API-Version")

	if serverResp.header.Get("Docker-Experimental") == "true" {
		ping.Experimental = true
	}

	return ping, nil
}

--- 
+++ 
@@ -7,7 +7,7 @@
 	"golang.org/x/net/context"
 )
 
-// Ping pings the server and returns the value of the "Docker-Experimental" & "API-Version" headers
+// Ping pings the server and returns the value of the "Docker-Experimental", "OS-Type" & "API-Version" headers
 func (cli *Client) Ping(ctx context.Context) (types.Ping, error) {
 	var ping types.Ping
 	req, err := cli.buildRequest("GET", fmt.Sprintf("%s/_ping", cli.basePath), nil, nil)
@@ -26,5 +26,7 @@
 		ping.Experimental = true
 	}
 
+	ping.OSType = serverResp.header.Get("OSType")
+
 	return ping, nil
 }
Hide command options that are related to Windows

Signed-off-by: Boaz Shuster <dcfbdecb7964372c22343bdfc0ea59b1d969bfd5@gmail.com>
