Remove secret from request headers

Now the requests are verified via JWT

client/client_test.go

@@ -2,7 +2,6 @@ package client
 
 import (
 	"context"
-	"encoding/base64"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -88,7 +87,6 @@ func TestClients(t *testing.T) {
 			testSuccessfulPost(t, client)
 			testMissing(t, client)
 			testErrorMessage(t, client)
-			testAuthenticationHeader(t, tc.secret, client)
 			testJWTAuthenticationHeader(t, client)
 			testXForwardedForHeader(t, client)
 			testHostWithTrailingSlash(t, client)
@@ -168,38 +166,6 @@ func testBrokenRequest(t *testing.T, client *GitlabNetClient) {
 	})
 }
 
-func testAuthenticationHeader(t *testing.T, secret string, client *GitlabNetClient) {
-	t.Run("Authentication headers for GET", func(t *testing.T) {
-		response, err := client.Get(context.Background(), "/auth")
-		require.NoError(t, err)
-		require.NotNil(t, response)
-
-		defer response.Body.Close()
-
-		responseBody, err := io.ReadAll(response.Body)
-		require.NoError(t, err)
-
-		header, err := base64.StdEncoding.DecodeString(string(responseBody))
-		require.NoError(t, err)
-		require.Equal(t, secret, string(header))
-	})
-
-	t.Run("Authentication headers for POST", func(t *testing.T) {
-		response, err := client.Post(context.Background(), "/auth", map[string]string{})
-		require.NoError(t, err)
-		require.NotNil(t, response)
-
-		defer response.Body.Close()
-
-		responseBody, err := io.ReadAll(response.Body)
-		require.NoError(t, err)
-
-		header, err := base64.StdEncoding.DecodeString(string(responseBody))
-		require.NoError(t, err)
-		require.Equal(t, secret, string(header))
-	})
-}
-
 func testJWTAuthenticationHeader(t *testing.T, client *GitlabNetClient) {
 	verifyJWTToken := func(t *testing.T, response *http.Response) {
 		responseBody, err := io.ReadAll(response.Body)

client/gitlabnet.go

@@ -3,7 +3,6 @@ package client
 import (
 	"bytes"
 	"context"
-	"encoding/base64"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -141,8 +140,6 @@ func (c *GitlabNetClient) DoRequest(ctx context.Context, method, path string, da
 	if user != "" && password != "" {
 		request.SetBasicAuth(user, password)
 	}
-	encodedSecret := base64.StdEncoding.EncodeToString([]byte(c.secret))
-	request.Header.Set(secretHeaderName, encodedSecret)
 
 	claims := jwt.RegisteredClaims{
 		Issuer:    jwtIssuer,