Update Boost.Asio API.

Networking/CryptoPlayer.h

@@ -21,7 +21,7 @@
 class CryptoPlayer : public MultiPlayer<ssl_socket*>
 {
     ssl_ctx ctx;
-    boost::asio::io_service io_service;
+    ssl_service io_service;
 
     vector<ssl_socket*> other_sockets;
 

Networking/PlayerCtSocket.h

@@ -32,7 +32,7 @@ class PlayerCtSocket : public osuCrypto::SocketInterface
         {
             for (auto& buffer : buffers)
             {
-                auto data = boost::asio::buffer_cast<osuCrypto::u8*>(buffer);
+                auto data = (octet*) buffer.data();
                 auto size = boost::asio::buffer_size(buffer);
                 this->buffers.push_back({data, size});
             }

Networking/ssl_sockets.h

@@ -18,7 +18,7 @@
 #define SSL_DIR "Player-Data/"
 #endif
 
-typedef boost::asio::io_service ssl_service;
+typedef boost::asio::io_context ssl_service;
 
 void check_ssl_file(string filename);
 void ssl_error(string side, string other, string server, exception& e);
@@ -46,7 +46,7 @@ class ssl_socket : public boost::asio::ssl::stream<boost::asio::ip::tcp::socket>
     typedef boost::asio::ssl::stream<boost::asio::ip::tcp::socket> parent;
 
 public:
-    ssl_socket(boost::asio::io_service& io_service,
+    ssl_socket(ssl_service& io_service,
             boost::asio::ssl::context& ctx, int plaintext_socket, string other,
             string me, bool client) :
             parent(io_service, ctx)
@@ -57,7 +57,7 @@ public:
 #endif
         lowest_layer().assign(boost::asio::ip::tcp::v4(), plaintext_socket);
         set_verify_mode(boost::asio::ssl::verify_peer);
-        set_verify_callback(boost::asio::ssl::rfc2818_verification(other));
+        set_verify_callback(boost::asio::ssl::host_name_verification(other));
         if (client)
             try
             {