LibWebSocket: Switch to using Core::Stream

As LibTLS now supports the Core::Stream APIs, we can get rid of the
split paths for TCP/TLS and significantly simplify the code as well.
Provided to you free of charge by the Core::Stream-ification team :^)

Userland/Libraries/LibWebSocket/Impl/WebSocketImpl.h

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2021, Dex♪ <dexes.ttp@gmail.com>
+ * Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/ByteBuffer.h>
+#include <AK/Span.h>
+#include <AK/String.h>
+#include <LibCore/Object.h>
+#include <LibWebSocket/ConnectionInfo.h>
+
+namespace WebSocket {
+
+class WebSocketImpl : public Core::Object {
+    C_OBJECT(WebSocketImpl);
+
+public:
+    virtual ~WebSocketImpl() override;
+    explicit WebSocketImpl(Core::Object* parent = nullptr);
+
+    void connect(ConnectionInfo const&);
+
+    bool can_read_line() { return MUST(m_socket->can_read_line()); }
+    ErrorOr<String> read_line(size_t size);
+
+    bool can_read() { return MUST(m_socket->can_read_without_blocking()); }
+    ErrorOr<ByteBuffer> read(int max_size);
+
+    bool send(ReadonlyBytes bytes) { return m_socket->write_or_error(bytes); }
+
+    bool eof() { return m_socket->is_eof(); }
+
+    void discard_connection()
+    {
+        m_socket.clear();
+    }
+
+    Function<void()> on_connected;
+    Function<void()> on_connection_error;
+    Function<void()> on_ready_to_read;
+
+private:
+    OwnPtr<Core::Stream::BufferedSocketBase> m_socket;
+};
+
+}