adding support for unsafe host header

cmd/httpx/httpx.go

@@ -23,6 +23,7 @@ import (
 	"github.com/projectdiscovery/httpx/common/slice"
 	"github.com/projectdiscovery/httpx/common/stringz"
 	"github.com/projectdiscovery/mapcidr"
+	"github.com/projectdiscovery/rawhttp"
 	"github.com/remeh/sizedwaitgroup"
 )
 
@@ -78,6 +79,14 @@ func main() {
 		options.rawRequest = string(rawRequest)
 	}
 
+	// disable automatic host header for rawhttp if manually specified
+	if options.Unsafe {
+		_, ok := httpxOptions.CustomHeaders["Host"]
+		if ok {
+			rawhttp.AutomaticHostHeader(false)
+		}
+	}
+
 	scanopts.Method = options.Method
 	protocol := "https"
 	scanopts.VHost = options.VHost