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Whether this is the right or wrong thing depends 100% on what you’re trying to do. For many applications you want to send your message immediately because your
by taneq 4y ago
Whether this is the right or wrong thing depends 100% on what you’re trying to do. For many applications you want to send your message immediately because your next message depends on the response.
- withinboredom 4y agoVery rarely this is the case. From the application’s perspective yes. From a packet perspective… no. The interface is going to send packets and they’ll end up in a few buffers after going through some wires. If something goes wrong along the way, they’ll be retransmitted. But the packets don’t care about the response, except an acknowledgment the packets were received. If you send 4000 byte messages when the MTU is 9000, you’re wasting perfectly good capacity. If you had Nagle’s turned on, you’d send one 8040 byte packet. With Nagle’s you don’t have to worry about the MTU, you write your data to the kernel and the rest is magically handled for you.