#2 Show a "not connected" message in the DCC Chat window if there is no connection while typing a message.

IRCClient/DCC.cpp

@@ -59,6 +59,7 @@ struct DCCPriv
 
     void disconnected(const asio::error_code& ec)
     {
+        socket.close();
         super.onDisconnected(SystemErrorToIRCError(ec));
     }
 
@@ -176,6 +177,11 @@ const IRCBase& DCC::context() const
     return mp->ircctx;
 }
 
+bool DCC::isConnected() const
+{
+    return mp->socket.is_open();
+}
+
 void DCC::setCallbackRead(DCC::CallbackRead&& cb)
 {
     mp->cbRead = std::move(cb);

IRCClient/DCC.h

@@ -58,6 +58,8 @@ public:
     IRCBase& context();
     const IRCBase& context() const;
 
+    bool isConnected() const;
+
     /*
      * Callbacks used by 'users' of this class.
     */

IWin/IWinDCCChat.cpp

@@ -80,13 +80,18 @@ void IWinDCCChat::onDisconnected(IRCError e)
 
 void IWinDCCChat::newLine(const QString& line)
 {
-    const auto nickname{ QString::fromStdString(dcc->context().getNickname()) };
-    print(PrintType::OwnText, tr("<%1> %2").arg(nickname, line));
-
-    auto data = DCC::stringToByteString(line.toStdString());
-    data.push_back(std::byte('\r'));
-    data.push_back(std::byte('\n'));
-    dcc->write(data);
+    if (dcc->isConnected()) {
+        const auto nickname{ QString::fromStdString(dcc->context().getNickname()) };
+        print(PrintType::OwnText, tr("<%1> %2").arg(nickname, line));
+
+        auto data = DCC::stringToByteString(line.toStdString());
+        data.push_back(std::byte('\r'));
+        data.push_back(std::byte('\n'));
+        dcc->write(data);
+    }
+    else {
+        print(PrintType::ProgramInfo, tr("Not connected with remote peer"));
+    }
 }
 
 void IWinDCCChat::onRead(const DCC::ByteString& data, std::size_t length)