Graylog Output Failure

Graylog Central (peer support)
1

When I enable “TCP Raw Output” of the data stream, it returned the below error. Any idea? Thanks.

Output disabled (triggered 4 minutes ago)

The output with the id 600edc46b9289c40f5d09775 in stream “pfsense” (id: 600bb0eeba83a338cf77b536) has been disabled for 30seconds because there were 6 failures. (Node: 940d99f8-5a7c-4f43-b60f-e61f4b032082 , Fault threshold: 5 )

2

I figure out the TCP communication was established. The issued was caused by my python code to receive the GELF output. Here is my python code.

import sys

if sys.version_info[0] < 3:
    # python 2 import
    from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
else:
    # python 3 import
    from http.server import BaseHTTPRequestHandler, HTTPServer

class BaseServer(BaseHTTPRequestHandler):
    def _set_headers(self):
        self.send_response(200)
        self.send_header('Content-type', 'text/html')
        self.end_headers()

    def do_GET(self):
        self._set_headers()
        self.wfile.write("<html><body><p>hello, world!</p></body></html>"
                            .encode('utf-8'))

    def do_HEAD(self):
        self._set_headers()
        
    def do_POST(self):
        content_length = int(self.headers['Content-Length'])
        post_data = self.rfile.read(content_length)
        self._set_headers()
        self.wfile.write("<html><body><p>POST!</p><p>%s</p></body></html>"
                            .encode('utf-8') % post_data)
        
def run(server_class=HTTPServer, handler_class=BaseServer, port=80):
    server_address = ('', port)
    httpd = server_class(server_address, handler_class)
    print('HTTP server running on port %s'% port)
    httpd.serve_forever()

if __name__ == "__main__":
    from sys import argv

    if len(argv) == 2:
        run(port=int(argv[1]))
    else:
        run()
3

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