check non-http urls

Author: oscarotero

src/Extractor.php

@@ -175,6 +175,10 @@ public function getUri(): UriInterface
     public function resolveUri($uri): UriInterface
     {
         if (is_string($uri)) {
+            if (!isHttp($uri)) {
+                throw new InvalidArgumentException('Uri string must use http or https scheme');
+            }
+
             $uri = $this->crawler->createUri($uri);
         }
 

src/functions.php

@@ -61,6 +61,11 @@ function resolveUri(UriInterface $base, UriInterface $uri): UriInterface
         ->withFragment('');
 }
 
+function isHttp(string $uri): bool
+{
+    return (bool) preg_match('#^(https?:|\.|/)#', $src);
+}
+
 function resolvePath(string $base, string $path): string
 {
     if ($path === '') {