Transmission Control Protocol (TCP) PDF

✂ Transmission control protocol (TCP) *[ Source: How to make a multiplayer game ]()* TCP is a connection-oriented protocol over an IP network. Connection is established [ ]() and terminated usi...

✂ Transmission control protocol (TCP) *[ Source: How to make a multiplayer game ]()* TCP is a connection-oriented protocol over an IP network. Connection is established [ ]() and terminated using a handshake. All packets sent are guaranteed to reach the [ ]() destination in the original order and without corruption through: Sequence numbers and checksum fields for each packet [ ]() [ Acknowledgement packets and automatic retransmission ]() ⠀ If the sender does not receive a correct response, it will resend the packets. If there are multiple timeouts, the connection is dropped. TCP also implements flow control [ ]() and congestion control. These guarantees cause delays and generally result in less [ ]() efficient transmission than UDP. To ensure high throughput, web servers can keep a large number of TCP connections open, resulting in high memory usage. It can be expensive to have a large number of open connections between web server threads and say, a memcached server. [ ]() [ Connection pooling can help in addition to switching to UDP where applicable. ]() TCP is useful for applications that require high reliability but are less time critical. Some examples include web servers, database info, SMTP, FTP, and SSH. Use TCP over UDP when: You need all of the data to arrive intact You want to automatically make a best estimate use of the network throughput