encryption + helpers + contact card compression + server routing start

contactcard.go

@@ -1,6 +1,8 @@
 package meowlib
 
 import (
+	"bytes"
+	"compress/gzip"
 	"encoding/json"
 	"fmt"
 	"image"
@@ -27,6 +29,31 @@ func (Contact *ContactCard) AddUrls(urls []string) {
 	}
 }
 
+func (contact *ContactCard) Serialize() ([]byte, error) {
+	out, err := proto.Marshal(contact)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (contact *ContactCard) Compress() ([]byte, error) {
+	out, err := contact.Serialize()
+	if err != nil {
+		return nil, err
+	}
+	var b bytes.Buffer
+	gz := gzip.NewWriter(&b)
+	if _, err := gz.Write(out); err != nil {
+		log.Fatal(err)
+	}
+	if err := gz.Close(); err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println(b.Bytes())
+	return b.Bytes(), nil
+}
+
 func (contact *ContactCard) WritePng(filename string) {
 	out, err := proto.Marshal(contact)
 	if err != nil {