implemented http server

internal/http/mime.go

@@ -0,0 +1,18 @@
+package http
+
+import (
+	"mime"
+	"path"
+)
+
+const MimeDefault = "application/octet-stream"
+const TextPlain = "text/plain; charset=utf-8"
+const TextHtml = "text/html; charset=utf-8"
+
+func GetMimeType(filePath string) string {
+	t := mime.TypeByExtension(path.Ext(filePath))
+	if t == "" {
+		t = MimeDefault
+	}
+	return t
+}