report content type if unexpected

2 files changed, 12 insertions, 5 deletions

diff --git a/packages/taler-util/src/errors.ts b/packages/taler-util/src/errors.ts
index cbf4263fc..7439ba69d 100644
--- a/packages/taler-util/src/errors.ts
+++ b/packages/taler-util/src/errors.ts
@@ -103,6 +103,11 @@ export interface DetailsMap {
     requestMethod: string;
     httpStatusCode: number;
     validationError?: string;
+    /**
+     * Content type of the response, usually only specified if not the
+     * expected content type.
+     */
+    contentType?: string;
   };
   [TalerErrorCode.WALLET_EXCHANGE_COIN_SIGNATURE_INVALID]: empty;
   [TalerErrorCode.WALLET_WITHDRAWAL_GROUP_INCOMPLETE]: {
@@ -197,17 +202,19 @@ export class TalerProtocolViolationError extends Error {
 }
 
 // compute a subset of TalerError, just for http request
-type HttpErrors = TalerErrorCode.WALLET_HTTP_REQUEST_GENERIC_TIMEOUT
+type HttpErrors =
+  | TalerErrorCode.WALLET_HTTP_REQUEST_GENERIC_TIMEOUT
   | TalerErrorCode.WALLET_HTTP_REQUEST_THROTTLED
   | TalerErrorCode.WALLET_RECEIVED_MALFORMED_RESPONSE
   | TalerErrorCode.WALLET_NETWORK_ERROR
   | TalerErrorCode.WALLET_UNEXPECTED_REQUEST_ERROR;
 
 type TalerHttpErrorsDetails = {
-  [code in HttpErrors]: TalerError<DetailsMap[code]>
-}
+  [code in HttpErrors]: TalerError<DetailsMap[code]>;
+};
 
-export type TalerHttpError = TalerHttpErrorsDetails[keyof TalerHttpErrorsDetails]
+export type TalerHttpError =
+  TalerHttpErrorsDetails[keyof TalerHttpErrorsDetails];
 
 export class TalerError<T = any> extends Error {
   errorDetail: TalerErrorDetail & T;
@@ -243,7 +250,6 @@ export class TalerError<T = any> extends Error {
   ): this is TalerError<DetailsMap[C]> {
     return this.errorDetail.code === code;
   }
-
 }
 
 /**
diff --git a/packages/taler-util/src/http-common.ts b/packages/taler-util/src/http-common.ts
index e934c07f7..7c58b3874 100644
--- a/packages/taler-util/src/http-common.ts
+++ b/packages/taler-util/src/http-common.ts
@@ -155,6 +155,7 @@ export async function readTalerErrorResponse(
         requestUrl: httpResponse.requestUrl,
         requestMethod: httpResponse.requestMethod,
         httpStatusCode: httpResponse.status,
+        contentType: contentType || "<null>",
       },
       "Error response did not even contain JSON. The request URL might be wrong or the service might be unavailable.",
     );