client: use constants for http methods

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

1 files changed, 7 insertions, 7 deletions

diff --git a/client/request.go b/client/request.go
index 144c416369..ee15a46ed0 100644
--- a/client/request.go
+++ b/client/request.go
@@ -29,12 +29,12 @@ type serverResponse struct {
 
 // head sends an http request to the docker API using the method HEAD.
 func (cli *Client) head(ctx context.Context, path string, query url.Values, headers map[string][]string) (serverResponse, error) {
-	return cli.sendRequest(ctx, "HEAD", path, query, nil, headers)
+	return cli.sendRequest(ctx, http.MethodHead, path, query, nil, headers)
 }
 
 // get sends an http request to the docker API using the method GET with a specific Go context.
 func (cli *Client) get(ctx context.Context, path string, query url.Values, headers map[string][]string) (serverResponse, error) {
-	return cli.sendRequest(ctx, "GET", path, query, nil, headers)
+	return cli.sendRequest(ctx, http.MethodGet, path, query, nil, headers)
 }
 
 // post sends an http request to the docker API using the method POST with a specific Go context.
@@ -43,21 +43,21 @@ func (cli *Client) post(ctx context.Context, path string, query url.Values, obj
 	if err != nil {
 		return serverResponse{}, err
 	}
-	return cli.sendRequest(ctx, "POST", path, query, body, headers)
+	return cli.sendRequest(ctx, http.MethodPost, path, query, body, headers)
 }
 
 func (cli *Client) postRaw(ctx context.Context, path string, query url.Values, body io.Reader, headers map[string][]string) (serverResponse, error) {
-	return cli.sendRequest(ctx, "POST", path, query, body, headers)
+	return cli.sendRequest(ctx, http.MethodPost, path, query, body, headers)
 }
 
 // putRaw sends an http request to the docker API using the method PUT.
 func (cli *Client) putRaw(ctx context.Context, path string, query url.Values, body io.Reader, headers map[string][]string) (serverResponse, error) {
-	return cli.sendRequest(ctx, "PUT", path, query, body, headers)
+	return cli.sendRequest(ctx, http.MethodPut, path, query, body, headers)
 }
 
 // delete sends an http request to the docker API using the method DELETE.
 func (cli *Client) delete(ctx context.Context, path string, query url.Values, headers map[string][]string) (serverResponse, error) {
-	return cli.sendRequest(ctx, "DELETE", path, query, nil, headers)
+	return cli.sendRequest(ctx, http.MethodDelete, path, query, nil, headers)
 }
 
 type headers map[string][]string
@@ -79,7 +79,7 @@ func encodeBody(obj interface{}, headers headers) (io.Reader, headers, error) {
 }
 
 func (cli *Client) buildRequest(method, path string, body io.Reader, headers headers) (*http.Request, error) {
-	expectedPayload := (method == "POST" || method == "PUT")
+	expectedPayload := (method == http.MethodPost || method == http.MethodPut)
 	if expectedPayload && body == nil {
 		body = bytes.NewReader([]byte{})
 	}