Pseudo Header Order

Pseudo headers are the following headers: ":method", ":authority", ":scheme", ":path" and the order of them varies per client profile. Therefore you can define the order of the pseudo headers on the (custom-)client Profile.

pseudoHeaderOrder := []string{
   ":method",
   ":authority",
   ":scheme",
   ":path",
}

customClientProfile := tls_client.NewClientProfile(tls.ClientHelloID{
   Client:      "MyCustomProfile",
   Version:     "1",
   Seed:        nil,
   SpecFactory: specFunc,
}, settings, settingsOrder, pseudoHeaderOrder, connectionFlow, nil, nil)

Shared Library & Standalone API

You will see on the CustomClient object payload that you can define the order as a list of strings.