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For questions about User Datagram Protocol, a Transport Layer protocol.

1
vote
Another point with streaming services is that there is a delay. For 2-way calls they try to keep the delay under a second so you do not notice. For video streaming of live events the delay can be si …
answered Nov 2 '19 by Darrell Root
5
votes
Because the keyword is MAY, it is not required for the receiving host to send a destination port unreachable if there is no process listening at that tcp or udp port, but it is allowed per the standard … As a UDP application developer, it is helpful to know that the destination port is unreachable, so the ICMP error message is helpful and appreciated. …
answered Oct 11 '19 by Darrell Root
3
votes
Usually, the destination port in the direction the socket was initiated, in combination with the IP protocol (tcp or udp), determines how the data is interpreted (there are 256 protocol numbers, tcp and … udp are two of the most common and have the “port” concept). …
answered Nov 20 '19 by Darrell Root