How to configure the connection pool size?

[finlaydotb]

I am trying to configure the configuration pool size of the Reqwest client, but can't seem to find how to do this.

I am going through the ClientBuilder documentation here https://docs.rs/reqwest/latest/reqwest/struct.ClientBuilder.html and can't find how.

[seanmonstar]

There's only this option: https://docs.rs/reqwest/latest/reqwest/struct.ClientBuilder.html#method.pool_max_idle_per_host