go-http-server-custom-write-buffer-patch

A patch that adds a configurable WriteBufferSize option to the Golang HTTP server

This patch has also been opened as a PR on the Golang source code repository @ golang/go#68143

Why this patch?

In some situations, you may need to adjust the default hard-coded write buffer size (currently 4 KB) of the Golang HTTP server.

Adjusting the default buffer size allows you to benefit from higher throughput and improving the performance of your HTTP servers.

Why is the write buffer size hard coded?

At the present, the Golang HTTP server does not have an option that allows you to configure the write buffer size for unknown reasons.

Refer to the below related issues for more information on this matter:

• golang/go#13870
• https://groups.google.com/g/golang-dev/c/OuFtcKEyGrg

How to run the patch?

Simply, run python patch_http_server.py to execute the Python script of the patch.

What does this patch do?

The patch will modify the src/net/http/server.go file of your Go installation to add a configurable WriteBufferSize option into the http.Server struct.

Then the patch will make the HTTP server connection manager use the configured WriteBufferSize instead of the default 4<<10 value.