Comparison of Transport-layer Protocols
| Feature Name | UDP | UDP Lite | TCP | SCTP | DCCP | RUDP |
|---|---|---|---|---|---|---|
| Packet header size | 8 bytes | 8 bytes | 20–60 bytes | 12 bytes | 12 or 16 bytes | |
| Transport-layer packet entity | Datagram | Datagram | Segment | Datagram | Datagram | Datagram |
| Connection oriented | No | No | Yes | Yes | Yes | Yes |
| Reliable transport | No | No | Yes | Yes | No | Yes |
| Unreliable transport | Yes | Yes | No | Yes | Yes | Yes |
| Preserve message boundary | Yes | Yes | No | Yes | Yes | Yes |
| Ordered delivery | No | No | Yes | Yes | No | Yes |
| Unordered delivery | Yes | Yes | No | Yes | Yes | Yes |
| Data checksum | Optional | Yes | Yes | Yes | Yes | Unsure |
| Checksum size (bits) | 16 | 16 | 16 | 32 | 16 | Unsure |
| Partial checksum | No | Yes | No | No | Yes | No |
| Path MTU | No | No | Yes | Yes | Yes | Unsure |
| Flow control | No | No | Yes | Yes | No | Yes |
| Congestion control | No | No | Yes | Yes | Yes | Unsure |
| ECN support | No | No | Yes | Yes | Yes | |
| Multiple streams | No | No | No | Yes | No | No |
| Multi-homing support | No | No | No | Yes | No | No |
| Bundling / Nagle | No | No | Yes | Yes | No | Unsure |
| NAT friendly | Yes | Yes | Yes | Yes | Yes | Yes |
Read more about this topic: Transport Layer
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