Low Latency
What is UDP Low Latency?
UDP provides low latency communication by sending packets without establishing a connection or waiting for acknowledgments, reducing transmission delays.
Why is UDP Low Latency useful?
Low latency is critical for real-time applications where quick data delivery is more important than reliability, such as live video streaming, online gaming, and voice calls.
How does UDP achieve Low Latency?
By avoiding connection setup and retransmission delays, UDP sends data immediately as datagrams, allowing minimal packet processing time.
Where is UDP Low Latency used?
It is widely used in time-sensitive applications like VoIP, video conferencing, online gaming, and real-time telemetry.
Which OSI layer does UDP Low Latency belong to?
UDP operates at the Transport Layer (Layer 4) of the OSI model and supports low latency data transfer.
Is UDP Low Latency Windows specific?
No, UDP’s low latency features are available on all major operating systems including Windows, Linux, and macOS.
Is UDP Low Latency Linux specific?
No, UDP’s low latency communication is universally supported across operating systems as part of the standard network stack.
Which Transport Protocol is associated with Low Latency?
UDP (User Datagram Protocol) is the primary transport protocol used for low latency communication.
Is UDP Low Latency using client-server model?
Yes, low latency UDP communication is often used in client-server models, especially in scenarios requiring fast, real-time data exchange.
In this section, you are going to learn
Terminology
Version Info
setup
Low Latency - Testcases
S.No |
Test Case |
Description |
Expected Result |
|---|---|---|---|
1 |
Send Small Packet |
Transmit minimal data |
Packet sent with minimal delay |
2 |
Receive Small Packet |
Receive minimal data |
Packet received instantly |
3 |
No Handshake Delay |
Start communication |
No connection setup delay |
4 |
No ACK Delay |
No acknowledgment required |
Immediate transmission |
5 |
Real-Time Audio |
Send audio stream |
Audio received with low latency |
6 |
Real-Time Video |
Send video stream |
Video received with low latency |
7 |
Game Data Transmission |
Send game state updates |
Updates received in real-time |
8 |
Sensor Data Stream |
Send IoT sensor data |
Data received with minimal delay |
9 |
DNS Query |
Send DNS request |
Response received quickly |
10 |
VoIP Packet |
Transmit voice packet |
Voice heard with low delay |
11 |
Packet with Jitter |
Simulate jitter |
Latency remains low |
12 |
Packet with Delay |
Introduce artificial delay |
Delay detected and measured |
13 |
Packet with Loss |
Drop packet |
No retransmission, latency unaffected |
14 |
Packet with Reordering |
Reorder packets |
No delay in delivery |
15 |
Packet with Duplication |
Duplicate packet |
No impact on latency |
16 |
High Throughput |
Send many packets quickly |
Low latency maintained |
17 |
Low Bandwidth |
Send over limited bandwidth |
Latency remains acceptable |
18 |
Network Congestion |
Simulate congestion |
Latency increases slightly |
19 |
No Flow Control |
Send burst of packets |
Immediate transmission |
20 |
No Congestion Control |
Send during congestion |
Packets sent without delay |
21 |
NAT Traversal |
Send through NAT |
Low latency maintained |
22 |
VPN Routing |
Send over VPN |
Latency remains low |
23 |
Proxy Routing |
Send via proxy |
Minimal delay added |
24 |
IPv4 Transmission |
Send over IPv4 |
Low latency observed |
25 |
IPv6 Transmission |
Send over IPv6 |
Low latency observed |
26 |
Local Network |
Send within LAN |
Near-zero latency |
27 |
Wide Area Network |
Send over WAN |
Acceptable latency |
28 |
Satellite Network |
Send via satellite |
Higher latency detected |
29 |
Mobile Network |
Send over 4G/5G |
Low latency maintained |
30 |
Wi-Fi Network |
Send over Wi-Fi |
Low latency observed |
31 |
Ethernet Network |
Send over Ethernet |
Very low latency |
32 |
Packet Size Variation |
Vary packet sizes |
Latency remains low |
33 |
Burst Transmission |
Send packets in bursts |
Low latency maintained |
34 |
Continuous Stream |
Send continuous data |
Stream received with low delay |
35 |
Idle Timeout |
Resume after idle |
Latency remains low |
36 |
Firewall Traversal |
Send through firewall |
No delay added |
37 |
IDS Monitoring |
Monitor for latency |
No latency spikes detected |
38 |
Logging Enabled |
Log packet timestamps |
Latency measurable |
39 |
Logging Disabled |
No logging overhead |
Latency unaffected |
40 |
Packet Timestamping |
Add timestamps |
Accurate latency measurement |
41 |
Packet Prioritization |
Prioritize UDP packets |
Low latency maintained |
42 |
QoS Enabled |
Apply QoS rules |
Priority packets delivered faster |
43 |
QoS Disabled |
No prioritization |
Latency may vary |
44 |
UDP Hole Punching |
Establish peer-to-peer |
Connection setup quickly |
45 |
UDP Broadcast |
Send to all nodes |
Broadcast received instantly |
46 |
UDP Multicast |
Send to group |
Multicast received with low delay |
47 |
UDP Unicast |
Send to single host |
Packet received quickly |
48 |
Packet Fragmentation |
Fragment large packet |
Reassembled with minimal delay |
49 |
Packet Reassembly |
Reassemble fragments |
No delay in final delivery |
50 |
Stress Test |
High volume, low latency |
Latency remains within threshold |
Reference links