send pong message to relay when we've received a ping response, added…

… example snippet for publishing an event to a relay which requires AUTH

src/Examples/publish-event-with-auth.php

@@ -0,0 +1,49 @@
+<?php
+
+declare(strict_types=1);
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+use swentel\nostr\Event\Event;
+use swentel\nostr\Key\Key;
+use swentel\nostr\Message\EventMessage;
+use swentel\nostr\Relay\Relay;
+use swentel\nostr\RelayResponse\RelayResponse;
+use swentel\nostr\RelayResponse\RelayResponseOk;
+use swentel\nostr\Request\Request;
+use swentel\nostr\Sign\Sign;
+
+try {
+    $note = new Event();
+    $note->setKind(1);
+    $note->addTag(['t', 'introduction']);
+    $note->addTag(['r', 'wss://nostr.wine']);
+    $content = 'Hello Nostr world! This is just a test, please ignore.';
+    $note->setContent($content);
+    // Sign event.
+    $private_key = new Key();
+    $private_key = $private_key->generatePrivateKey();
+    $signer = new Sign();
+    $signer->signEvent($note, $private_key);
+    // Optional, verify event.
+    $isValid = $note->verify();
+    // Transmit the event to a relay.
+    $relay = new Relay('wss://nostr.wine');
+    $eventMessage = new EventMessage($note);
+    $relay->setMessage($eventMessage);
+    $request = new Request($relay, $eventMessage);
+    $response = $request->send();
+    // Handle response.
+    foreach ($response as $relayUrl => $relayResponses) {
+        foreach ($relayResponses as $relayResponse) {
+            if ($relayResponse->isSuccess && $relayResponse instanceof RelayResponseOk) {
+                print 'The event has been transmitted to the relay ' . $relayUrl . PHP_EOL;
+                $eventId = $relayResponse->eventId;
+                print 'The received event id from the relay: ' . $relayResponse->eventId;
+                // Now we could request the event with this id.
+            }
+        }
+    }
+} catch (Exception $e) {
+    print 'Exception error: ' . $e->getMessage() . PHP_EOL;
+}

src/Request/Request.php

@@ -16,6 +16,7 @@
 use WebSocket;
 use WebSocket\Client;
 use WebSocket\Connection;
+use WebSocket\Message\Pong;
 use WebSocket\Message\Text;
 
 class Request implements RequestInterface
@@ -116,8 +117,9 @@ private function getResponseFromRelay(Relay $relay): array | RelayResponse
                 $client->disconnect();
                 return RelayResponse::create($response);
             } elseif ($response instanceof WebSocket\Message\Ping) {
-                $client->disconnect();
-                return $this->responses;
+                // Send pong message.
+                $pongMessage = new Pong();
+                $client->text($pongMessage->getPayload());
             } elseif ($response instanceof Text) {
                 $relayResponse = RelayResponse::create(json_decode($response->getContent()));
                 $this->responses[] = $relayResponse;