fix: normalize default user-agent string

Changes the default user-agent from `Laminas\Http\Client` to
`Laminas_Http_Client`, as many servers and clients do not accept escape
characters in the user-agent.

Fixes #38

Signed-off-by: Matthew Weier O'Phinney <matthew@weierophinney.net>

src/Client.php

@@ -110,7 +110,7 @@ class Client implements DispatchableInterface
     protected $config = [
         'maxredirects'    => 5,
         'strictredirects' => false,
-        'useragent'       => Client::class,
+        'useragent'       => 'Laminas_Http_Client',
         'timeout'         => 10,
         'connecttimeout'  => null,
         'adapter'         => Socket::class,

test/ClientTest.php

@@ -26,6 +26,7 @@
 use LaminasTest\Http\TestAsset\ExtendedClient;
 use PHPUnit\Framework\TestCase;
 use ReflectionMethod;
+use ReflectionProperty;
 
 class ClientTest extends TestCase
 {
@@ -638,4 +639,15 @@ public function testStreamCompression(AdapterInterface $adapter)
 
         self::assertSame($response->getBody(), file_get_contents($tmpFile));
     }
+
+    public function testDefaultUserAgentDoesNotUseEscapeCharacter()
+    {
+        $client = new Client();
+        $r      = new ReflectionProperty($client, 'config');
+        $r->setAccessible(true);
+        $config = $r->getValue($client);
+        $this->assertInternalType('array', $config);
+        $this->assertArrayHasKey('useragent', $config);
+        $this->assertSame('Laminas_Http_Client', $config['useragent']);
+    }
 }