Adds a specific error when the request is too big to use the GET verb

src/protocols/Http.ts

@@ -297,7 +297,6 @@ export default class HttpProtocol extends KuzzleAbstractProtocol {
         path = `/${path}`;
       }
       const url = `${this.protocol}://${this.host}:${this.port}${path}`;
-
       const headers = payload.headers || {};
       headers['Content-Length'] = Buffer.byteLength(payload.body || '');
 
@@ -306,7 +305,13 @@ export default class HttpProtocol extends KuzzleAbstractProtocol {
         body: payload.body,
         timeout: this._timeout
       })
-        .then(response => JSON.parse(response.body));
+        .then(response => {
+          if (response.statusCode === 431) {
+            throw new Error('Request query string is too large. Try to use the method with the POST verb instead.');
+          }
+
+          return JSON.parse(response.body);
+        });
     }
 
     // Browser implementation, using XMLHttpRequest:

src/protocols/abstract/Base.ts

@@ -131,7 +131,19 @@ Discarded request: ${JSON.stringify(request)}`));
       this._pendingRequests.delete(request.requestId);
 
       if (response.error) {
-        const error = new KuzzleError(response.error, stack);
+        let error;
+
+        // Wrap API error but directly throw errors that comes from SDK
+        if (response.error.id) {
+          error = new KuzzleError(response.error, stack);
+        }
+        else {
+          // Keep both stacktrace
+          const lines = stack.split('\n');
+          lines[0] = '';
+          response.error.stack += '\n' + lines.join('\n');
+          error = response.error;
+        }
 
         this.emit('queryError', error, request);