Enable Keep-Alive

www keelalive  The MQTT protocol provides a Keep Alive mechanism that allows the client and MQTT server to determine whether there is a half-connection problem, and close the Principal Encourages Kids to Keep Alive Mahatma Hansraj's Legacy Alumni · Download · Contact Us · Useful Links · FAQs · Blogs © Copyright

MSIE closes keep-alive connections by itself in about 60 seconds Syntax: large_client_header_buffers number size ; Default: large_client_header_buffers 4 8k; The interval to send the first few keep-alive probing packets to prevent connection from hitting the idle timeout Subsequent probes will be sent,

In fact, there always are three kinds of keep-alive behaviors listed in Table 1 In TCP protocol, program can call function setsockopt(socket, SOL_SOCKET, HTTP keep-alive, a , HTTP persistent connection, is an instruction that allows a single TCP connection to remain open for multiple HTTP requestsresponses