Error with self.response["key"] while using JSP agent

[alejandropts1]

[!] CoreException: Traceback (most recent call last):
File "kraken.py", line 51, in
client.do_status()
File "/opt/tools/Kraken/lib/clients/st.py", line 90, in do_status
response = self.httpclient.do_http_request(action)
File "/opt/tools/Kraken/lib/http.py", line 358, in do_http_request
response_data = self.__parse_response(response)
File "/opt/tools/Kraken/lib/http.py", line 339, in __parse_response
raise CoreException(f"response has not data field: '" + self.response["key"] + "'" + "\n" + response.text)
lib.exception.CoreException: response has not data field: 'data'

data=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

[secu77]

Can you provide more information about the environment in which you are deploying the JSP agent?

[alejandropts1]

I'm deploying it in liferay 7.2.0 with tomcat server

[secu77]

I've seen what was going on. Apparently this line:

response.setContentLength(_output.length());

was causing the HTTP response data to be returned wrong (only in Liferay, because it works fine with Tomcat). I simply removed it because by default the Java web server calculates the content length:

kraken-ng/agents@5ef007a#diff-c3a5ec2517bcce8083bc65fd2fddb1fe39a14425a244dc5c8d1acebd1d7e86d5L410

Please confirm me that this change fixes your bug.