Reusing http connections in Golang

Question

I\'m currently struggling to find a way to reuse connections when making HTTP posts in Golang.

I\'ve created a transport and client like so:

// Crea         


        

Answer 1

The missing point here is the "goroutine" thing. Transport has its own connection pool, by default each connection in that pool is reused (if body is fully read and closed) but if several goroutines are sending requests, new connections will be created (the pool has all connections busy and will create new ones). To solve that you will need to limit the maximum number of connections per host: Transport.MaxConnsPerHost (https://golang.org/src/net/http/transport.go#L205).

Probably you also want to setup IdleConnTimeout and/or ResponseHeaderTimeout.