{Port: port, Protocol: simulation.HTTP, TLS: simulation.TLS, HostHeader: "foo"},
			{Port: port, Protocol: simulation.HTTP, TLS: simulation.TLS, HostHeader: "foo", Alpn: "http/1.1"},
			{Port: port, Protocol: simulation.TCP, TLS: simulation.Plaintext, HostHeader: "foo"},
			{Port: port, Protocol: simulation.HTTP2, TLS: simulation.TLS, HostHeader: "foo"},
		} {
			suffix := ""

}

func (c Call) FillDefaults() Call {
	if c.Headers == nil {
		c.Headers = http.Header{}
	}
	if c.HostHeader != "" {
		c.Headers["Host"] = []string{c.HostHeader}
	}
	// For simplicity, set SNI automatically for TLS traffic.
	if c.Sni == "" && (c.TLS == TLS) {
		c.Sni = c.HostHeader
	}
	if c.Path == "" {
		c.Path = "/"
	}
	if c.TLS == "" {
		c.TLS = Plaintext
	}
	if c.Address == "" {