cross server怎么取出自定义头部的Token

客户端是这样发送post请求的
    with vHttp do
    begin      
      ContentType       := 'application/json';
      UserAgent         := 'Embarcadero URI Client/1.0';
      vHttp.CustomHeaders['Authorization'] := 'Bearer '+'aaaaaaaaaaaaabbbbbbbbbbbcccccccccc';//Access_Token;

 

服务端这么取token：

class function TNetCrossMiddleware.AuthenticateDigest(
  AAuthGetPasswordProc: TAuthGetPasswordProc; const ARealm: string): TCrossHttpRouterProc2;
begin
  Result :=
    procedure(const ARequest: ICrossHttpRequest; const AResponse: ICrossHttpResponse; var AHandled: Boolean)
    var
      LUserName, LCorrectPassword: string;
      LNonce, LUserResponse, LCorrectResponse: string;
      LAuthStr: string;
      A1, A2, HA1, HA2: string;
      LAuthParams: TDelimitParams;
    begin
      // Authorization: Digest username="admin", realm="test realm", nonce="2468217498b46028705d401192459edd", uri="/login?key=value1", response="1d663058353e8f5831328728c29a6a1a", qop=auth, nc=00000006, cnonce="5d63a594e16feba2"
      LAuthStr := ARequest.Header['Authorization'];
      if (LAuthStr <> '') then
      begin
        if (LAuthStr.StartsWith('Digest')) then
          LAuthStr := LAuthStr.Substring(7)
        else
          LAuthStr := '';
      end;

      LCorrectPassword := #0;
      if (LAuthStr <> '') then
      begin
        LAuthParams := TDelimitParams.Create;
        try
          LAuthParams.Delimiter := ',';
          LAuthParams.Decode(LAuthStr);

          LUserName := LAuthParams['username'].Replace('"', '');
          // 获取用户名对应的正确密码
          if Assigned(AAuthGetPasswordProc) then
            AAuthGetPasswordProc(ARequest, LUserName, LCorrectPassword);

          {$region '计算摘要'}
          A1 := Format('%s:%s:%s', [LUserName, ARealm, LCorrectPassword]);
          A2 := Format('%s:%s', [ARequest.Method, LAuthParams['uri'].Replace('"', '')]);

          HA1 := TUtils.BytesToHex(THashMD5.GetHashBytes(A1));
          HA2 := TUtils.BytesToHex(THashMD5.GetHashBytes(A2));

          LCorrectResponse := HA1 +
            ':' + LAuthParams['nonce'].Replace('"', '') +
            ':' + LAuthParams['nc'].Replace('"', '') +
            ':' + LAuthParams['cnonce'].Replace('"', '') +
            ':auth' +
            ':' + HA2;
          LCorrectResponse := TUtils.BytesToHex(THashMD5.GetHashBytes(LCorrectResponse));
          {$endregion}

          // 客户端已计算好的摘要
          LUserResponse := LAuthParams['response'].Replace('"', '');
        finally
          FreeAndNil(LAuthParams);
        end;
      end;

      // 比对客户端与服务端的摘要是否匹配
      if (LAuthStr = '') or (LUserResponse <> LCorrectResponse) then
      begin
        AHandled := True;
        LNonce := TUtils.BytesToHex(THashMD5.GetHashBytes(DateTimeToStr(Now)));
        AResponse.Header['WWW-authenticate'] := Format(
          'Digest realm="%s", qop=auth, nonce="%s"',
          [ARealm, LNonce]);
        AResponse.SendStatus(401);
        Exit;
      end;

      AHandled := False;
    end;
end;