What protocol do you think video game programmers would use UDP or TCP? Why do you think the game uses one or the other protocols? Give details!
Video game programmers need to select the type of protocol for developing a game. There are two different sockets available i.e. TCP/ IP and UDP. Both the sockets differ in properties as listed below
Based on properties, a programmer can choose both the protocols as per his requirements and expectation of game but UDP is always preferred by the programmers for games. There are number of reasons for this selection as TCP reliability and guarantee does not suit the programming environment.
TCP can make the gaming environment poor: TCP can make the gaming environment poor in multi-player programming environment as TCP will break data into small packets and can decide that data will be sent only enough data is buffered so that a reasonable size packet can be built. This can make response time delayed which is not expected in gaming environment.
TCP second quality of reliability of data to be in order can also prove a curse as if TCP detect a packet is loss; the lost packet is resented to other machine. The receiver will discard the duplicate packets and packets are re-sequenced for reliability and ordered response. This will delay the response to a minimum of 1/5th of a second to maximum 1/2 of second.
So, TCP must not be used in such environment as every action has to be stopped and wait until the lost packets are sent and ordered.
TCP is only suited for games where there are not any real time constraints and also receiving the latest data straight is not a necessity for the game to work, TCP is a good option.
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