package main import ( "strconv" log "github.com/sirupsen/logrus" "github.com/lqqyt2423/go-mitmproxy/proxy" ) type AddHeader struct { proxy.BaseAddon count int } func (a *AddHeader) Responseheaders(f *proxy.Flow) { a.count += 1 f.Response.Header.Add("x-count", strconv.Itoa(a.count)) } func main() { opts := &proxy.Options{ Addr: ":9080", StreamLargeBodies: 1024 * 1024 * 5, } p, err := proxy.NewProxy(opts) if err != nil { log.Fatal(err) } p.AddAddon(&AddHeader{}) log.Fatal(p.Start()) }