dotcloud/docker

package requirement // import "github.com/docker/docker/integration/internal/requirement"

import (
    "net/http"
    "strings"
    "testing"
    "time"
)

// HasHubConnectivity checks to see if https://hub.docker.com is
// accessible from the present environment
func HasHubConnectivity(t *testing.T) bool {
    t.Helper()
    // Set a timeout on the GET at 15s
    timeout := 15 * time.Second
    url := "https://hub.docker.com"

    client := http.Client{Timeout: timeout}
    resp, err := client.Get(url)
    if err != nil && strings.Contains(err.Error(), "use of closed network connection") {
        t.Fatalf("Timeout for GET request on %s", url)
    }
    if resp != nil {
        resp.Body.Close()
    }
    return err == nil
}