Add ClientConfig and ConnectionConfig, Feature Negotiation and Authentication

src/Config/ConnectionConfig.php

@@ -0,0 +1,81 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Nsq\Config;
+
+/**
+ * The configuration object that holds the config status for a single Connection.
+ *
+ * @psalm-immutable
+ */
+final class ConnectionConfig
+{
+    public function __construct(
+        // Whether or not authorization is required by nsqd.
+        public bool $authRequired,
+
+        // Whether deflate compression is enabled for this connection or not.
+        public bool $deflate,
+        // The deflate level. This value can be ignored if [deflate] is `false`.
+        public int $deflateLevel,
+
+        // The maximum deflate level supported by the server.
+        public int $maxDeflateLevel,
+
+        // The maximum value for message timeout.
+        public int $maxMsgTimeout,
+        /*
+         * Each nsqd is configurable with a max-rdy-count. If the consumer sends a RDY count that is outside
+         * of the acceptable range its connection will be forcefully closed.
+         */
+        public int $maxRdyCount,
+
+        // The effective message timeout.
+        public int $msgTimeout,
+
+        // The size in bytes of the buffer nsqd will use when writing to this client.
+        public int $outputBufferSize,
+        // The timeout after which any data that nsqd has buffered will be flushed to this client.
+        public int $outputBufferTimeout,
+
+        /*
+         * The sample rate for incoming data to deliver a percentage of all messages received to this connection.
+         * This only applies to subscribing connections. The valid range is between 0 and 99, where 0 means that all
+         * data is sent (this is the default). 1 means that 1% of the data is sent.
+         */
+        public int $sampleRate,
+
+        // Whether snappy compression is enabled for this connection or not.
+        public bool $snappy,
+
+        // Whether TLS is enabled for this connection or not.
+        public bool $tls,
+
+        // The nsqd version.
+        public string $version,
+    ) {
+    }
+
+    /**
+     * @phpstan-ignore-next-line
+     */
+    public static function fromArray(array $array): self
+    {
+        return new self(
+            authRequired: $array['auth_required'],
+            deflate: $array['deflate'],
+            deflateLevel: $array['deflate_level'],
+            maxDeflateLevel: $array['max_deflate_level'],
+            maxMsgTimeout: $array['max_msg_timeout'],
+            maxRdyCount: $array['max_rdy_count'],
+            msgTimeout: $array['msg_timeout'],
+            outputBufferSize: $array['output_buffer_size'],
+            outputBufferTimeout: $array['output_buffer_timeout'],
+            sampleRate: $array['sample_rate'],
+            snappy: $array['snappy'],
+            tls: $array['tls_v1'],
+            version: $array['version'],
+        );
+    }
+}