--- /dev/null
+<?php
+namespace GuzzleHttp\Psr7;
+
+use Psr\Http\Message\StreamInterface;
+
+/**
+ * Stream decorator that prevents a stream from being seeked
+ */
+class NoSeekStream implements StreamInterface
+{
+ use StreamDecoratorTrait;
+
+ public function seek($offset, $whence = SEEK_SET)
+ {
+ throw new \RuntimeException('Cannot seek a NoSeekStream');
+ }
+
+ public function isSeekable()
+ {
+ return false;
+ }
+}