Explain in the code how to connect to the LongPoll server, how to get an answer, etc. I will be very grateful

Closed due to the fact that the issue is too common for participants Alexander Petrov , andreymal , Viktorov , user194374, HamSter Jan 7 '18 at 7:19 .

Please correct the question so that it describes the specific problem with sufficient detail to determine the appropriate answer. Do not ask a few questions at once. See “How to ask a good question?” For clarification. If the question can be reformulated according to the rules set out in the certificate , edit it .

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