Add digest to request

main.go

@@ -9,6 +9,7 @@ import (
 	"os"
 
 	"crispbyte.dev/sig-auth/client"
+	"github.com/opencontainers/go-digest"
 	"golang.org/x/crypto/ssh"
 )
 
@@ -30,10 +31,18 @@ func main() {
 		log.Fatal(err)
 	}
 
-	resp, err := client.Post(
-		"http://localhost:8080/post",
-		"application/json",
-		bytes.NewBuffer(json_data))
+	id := digest.FromBytes(json_data)
+
+	req, err := http.NewRequest("POST", "http://localhost:8080/post", bytes.NewBuffer(json_data))
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	req.Header.Add("Content-Digest", string(id.Algorithm())+"="+id.Encoded())
+	req.Header.Add("Content-Type", "application/json")
+
+	resp, err := client.Do(req)
 
 	if err != nil {
 		log.Fatal(err)