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Fix DPoPInterceptor when called after retry #1536

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Original file line number Diff line number Diff line change
Expand Up @@ -117,7 +117,8 @@ private void processRequest(HttpRequest request, boolean tokenRequest) {
Header authorization = request.getFirstHeader("Authorization");
if (authorization != null) {
//already authenticated, need to replace Authorization header prefix and set ath claim
String token = authorization.getValue().replaceFirst("^Bearer ", "");
//the DPoP prefix might already be set if the request is retried
String token = StringUtils.substringAfter(authorization.getValue(), " ");
request.setHeader("Authorization", DPOP_HEADER + " " + token);
byte[] ath = SHA256.digest(token.getBytes(StandardCharsets.US_ASCII));
builder.claim("ath", Encoders.BASE64URL.encode(ath));
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