/
net.go
110 lines (99 loc) · 2.88 KB
/
net.go
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package utilities
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"log"
"net"
"net/http"
"strings"
"time"
dockerVersion "github.com/docker/docker/dockerversion"
dockerEngine "github.com/docker/docker/engine"
)
var (
ErrConnectionRefused = errors.New("Cannot connect to the Docker daemon. Is 'docker -d' running on this host?")
)
func HTTPClient() *http.Client {
tr := &http.Transport{
// TLSClientConfig: cli.tlsConfig,
Dial: func(network, addr string) (net.Conn, error) {
return net.DialTimeout(network, addr, 10*time.Second)
},
}
return &http.Client{Transport: tr}
}
func Call(method, path string, data interface{}, passAuthInfo bool) (io.ReadCloser, int, error) {
params := bytes.NewBuffer(nil)
if data != nil {
if env, ok := data.(dockerEngine.Env); ok {
if err := env.Encode(params); err != nil {
return nil, -1, err
}
} else {
buf, err := json.Marshal(data)
if err != nil {
return nil, -1, err
}
if _, err := params.Write(buf); err != nil {
return nil, -1, err
}
}
}
var req *http.Request
var err error
req, err = http.NewRequest(method, path, params)
log.Printf("(%s) %s -> %s \n", method, req.URL.String(), path)
if err != nil {
return nil, -1, err
}
// if passAuthInfo {
// cli.LoadConfigFile()
// // Resolve the Auth config relevant for this server
// authConfig := cli.configFile.ResolveAuthConfig(registry.IndexServerAddress())
// getHeaders := func(authConfig registry.AuthConfig) (map[string][]string, error) {
// buf, err := json.Marshal(authConfig)
// if err != nil {
// return nil, err
// }
// registryAuthHeader := []string{
// base64.URLEncoding.EncodeToString(buf),
// }
// return map[string][]string{"X-Registry-Auth": registryAuthHeader}, nil
// }
// if headers, err := getHeaders(authConfig); err == nil && headers != nil {
// for k, v := range headers {
// req.Header[k] = v
// }
// }
// }
req.Header.Set("User-Agent", "Docker-Client/"+dockerVersion.VERSION)
// req.URL.Host = cli.ship.Fqdn
// req.URL.Scheme = cli.ship.Schema
if data != nil {
req.Header.Set("Content-Type", "application/json")
} else if method == "POST" {
req.Header.Set("Content-Type", "plain/text")
}
resp, err := HTTPClient().Do(req)
if err != nil {
if strings.Contains(err.Error(), "connection refused") {
return nil, -1, ErrConnectionRefused
}
return nil, -1, err
}
if resp.StatusCode < 200 || resp.StatusCode >= 400 {
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, -1, err
}
if len(body) == 0 {
return nil, resp.StatusCode, fmt.Errorf("Error: request returned %s for API route and version %s, check if the server supports the requested API version", http.StatusText(resp.StatusCode), req.URL)
}
return nil, resp.StatusCode, fmt.Errorf("Error response from daemon: %s", bytes.TrimSpace(body))
}
return resp.Body, resp.StatusCode, nil
}