CODEWITHSUNDEEP
network-programminggoconnection
Kim Byer
Kim Byer

Reputation: 293

What are the uses of SetWriteDeadline

Can someone please give me a few scenarios where I might use SetWriteDeadline? I know that SetReadDeadline helps a developer to determine whether the connected endpoint is still reachable or not (with the help of PING/PONG frames), but I can't figure out why I might use SetWriteDeadline.

Upvotes: 4

Views: 2151

Answers (2)

VonC
VonC

Reputation: 1324178

A robust application will set both read and write deadlines

But preferable with Go 1.12 (Q1 2019).
See golang/go issue 25729: net: SetDeadline performance is poor

That has recently been fixed:

Both the improvements in throughput and latency are far less affected by -cpu values. Nice job!

Upvotes: 0

Thundercat
Thundercat

Reputation: 120951

Write to a connection returns an error when the write operation does not complete by the last set deadline.

The typical use of a write deadline is to detect a peer that is not reading data or is not reading data at an acceptable rate.

A robust application will set both read and write deadlines (but usually not to the same value).

Upvotes: 4

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