TCP vs UDP Crash Course

TCP and UDP are communication protocols that allows us to send and receive data in a network. We have both for a reason since each has its advantages and disadvantages. In this video we will talk about two protocols, pros and cons of each one and will write tcp and udp server with nodejs showing you these in ACTION. We also talk about how reliable udp is used in gaming for intermitted network connection.

Code!
https://github.com/hnasr/javascript_playground/tree/master/tcp

Jump Codes 🏷
0:00 Intro
04:12 TCP pros cons
19:00 Tcp demo (code)
24:25 UDP pros cons
31:25 UDP demo (code)
35:40 Summary

Explain TCP
Pros:
acknolwedgment,
garenteed delivery,
connection based
congestion control
ordered packets

Cons
Larger packets
More bandwidth since more headers.
Slower (because of retransmission)
stateful once connection is lost its lost, cannot resume it.

TCP Example (Code)
telnet 127.0.0.1 8080

Explain UDP
Pros
Statless,
Less bandwidth
smaller packets
Faster to transmit

Cons
no ack,
no garenteed delivery,
no congestion control
no ordered packets

UDP client
echo “foo” | nc -w1 -u 127.0.0.1 41234

Stay Awesome!
Hussein .