改名

2021-08-24 18:24:46 +08:00
parent 575f4b8520
commit 24c93edf2b
110 changed files with 5 additions and 6 deletions
@@ -0,0 +1,81 @@
+<?php
+
+namespace Server\Protocol;
+
+
+class WebSocket extends Protocol
+{
+
+
+	//
+	public function decode($received): ?string
+	{
+		$decoded = null;
+		$buffer = $received;
+		$len = ord($buffer[1]) & 127;
+		if ($len === 126) {
+			$masks = substr($buffer, 4, 4);
+			$data = substr($buffer, 8);
+		} else {
+			if ($len === 127) {
+				$masks = substr($buffer, 10, 4);
+				$data = substr($buffer, 14);
+			} else {
+				$masks = substr($buffer, 2, 4);
+				$data = substr($buffer, 6);
+			}
+		}
+		for ($index = 0; $index < strlen($data); $index++) {
+			$decoded .= $data[$index] ^ $masks[$index % 4];
+		}
+
+		return $decoded;
+	}
+
+	const BINARY_TYPE_BLOB = "\x81";
+
+
+	public function encode($buffer): string
+	{
+		$len = strlen($buffer);
+
+		$first_byte = self::BINARY_TYPE_BLOB;
+
+		if ($len <= 125) {
+			$encode_buffer = $first_byte . chr($len) . $buffer;
+		} else {
+			if ($len <= 65535) {
+				$encode_buffer = $first_byte . chr(126) . pack("n", $len) . $buffer;
+			} else {
+				//pack("xxxN", $len)pack函数只处理2的32次方大小的文件，实际上2的32次方已经4G了。
+				$encode_buffer = $first_byte . chr(127) . pack("xxxxN", $len) . $buffer;
+			}
+		}
+
+		return $encode_buffer;
+	}
+
+
+	/**
+	 * @param $data
+	 * @return string
+	 */
+	private function getWebSocketProtocol($data): string
+	{
+		[$http_protocol, $body] = $this->resolveProtocol($data);
+		$key = base64_encode(sha1($http_protocol['Sec-WebSocket-Key'] . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11', TRUE));
+		$headers = [
+			'HTTP/1.1 101 Switching Protocols',
+			'Upgrade: websocket',
+			'Connection: Upgrade',
+			'Sec-WebSocket-Accept: ' . $key,
+			'Sec-WebSocket-Version: 13',
+		];
+		if (isset($http_protocol['Sec-WebSocket-Protocol'])) {
+			$headers[] = 'Sec-WebSocket-Protocol: ' . $http_protocol['Sec-WebSocket-Protocol'];
+		}
+		return implode("\r\n", $headers) . "\r\n\r\n";
+	}
+
+
+}