const golang.org/x/net/http2.transportDefaultStreamFlow
2 uses
golang.org/x/net/http2 (current package)
config.go#L108: setDefault(&conf.MaxUploadBufferPerStream, 1, math.MaxInt32, transportDefaultStreamFlow)
transport.go#L48: transportDefaultStreamFlow = 4 << 20
The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)