oracle: send user-agent header with our requests, fix #1923

pkg/core/oracle_test.go

@@ -327,8 +327,8 @@ type (
 )
 
 // Get implements oracle.HTTPClient interface.
-func (c *httpClient) Get(url string) (*http.Response, error) {
+func (c *httpClient) Do(req *http.Request) (*http.Response, error) {
-	resp, ok := c.responses[url]
+	resp, ok := c.responses[req.URL.String()]
 	if ok {
 		return &http.Response{
 			StatusCode: resp.code,

pkg/services/oracle/oracle.go

@@ -66,7 +66,7 @@ type (
 
 	// HTTPClient is an interface capable of doing oracle requests.
 	HTTPClient interface {
-		Get(string) (*http.Response, error)
+		Do(*http.Request) (*http.Response, error)
 	}
 
 	// Broadcaster broadcasts oracle responses.

pkg/services/oracle/request.go

@@ -111,7 +111,14 @@ func (o *Oracle) processRequest(priv *keys.PrivateKey, req request) error {
 					break
 				}
 			}
-			r, err := o.Client.Get(req.Req.URL)
+			httpReq, err := http.NewRequest("GET", req.Req.URL, nil)
+			if err != nil {
+				o.Log.Warn("failed to create http request", zap.String("url", req.Req.URL), zap.Error(err))
+				resp.Code = transaction.Error
+				break
+			}
+			httpReq.Header.Set("User-Agent", "NeoOracleService/3.0")
+			r, err := o.Client.Do(httpReq)
 			if err != nil {
 				o.Log.Warn("oracle request failed", zap.String("url", req.Req.URL), zap.Error(err))
 				resp.Code = transaction.Error