Support Secure WebSocket

Add full WSS support to public server list (using wss_port, overriding
insecure port), favorite servers list, and direct connections, and show
which servers are secure.

Revert the upstream's removal of `legacy` ServerInfo field, as I use it
to filter out legacy servers. To differentiate schemes, the `scheme`
field is used, either "ws" or "wss". I don't see the reason to add "tcp"
protocol when we don't even support it.

For the UI, add icons for secure and insecure connections. Highlight
secure servers with a green background.

In the favorite server dialog, a checkbox was added to select whether
the server is using WSS.

In the direct connection dialog, support "wss" scheme and default ports:
80 for WS, 443 for WSS, as per the WebSocket specification.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/widgets/server_editor_dialog.cpp b/src/widgets/server_editor_dialog.cpp
index 03c8d6c6..8f987f6a 100644
--- a/src/widgets/server_editor_dialog.cpp
+++ b/src/widgets/server_editor_dialog.cpp
@@ -31,6 +31,7 @@ ServerEditorDialog::ServerEditorDialog(QWidget *parent)
   FROM_UI(QLineEdit, name);
   FROM_UI(QLineEdit, hostname);
   FROM_UI(QSpinBox, port);
+  FROM_UI(QCheckBox, secure_cb);
   FROM_UI(QPlainTextEdit, description);
   FROM_UI(QDialogButtonBox, button_box);
 
@@ -49,6 +50,7 @@ ServerEditorDialog::ServerEditorDialog(const ServerInfo &server, QWidget *parent
   ui_name->setText(server.name);
   ui_hostname->setText(server.address);
   ui_port->setValue(server.port);
+  ui_secure_cb->setChecked(server.scheme == "wss");
   ui_description->setPlainText(server.description);
 }
 
@@ -58,6 +60,7 @@ ServerInfo ServerEditorDialog::currentServerInfo() const
   server.name = ui_name->text();
   server.address = ui_hostname->text();
   server.port = ui_port->value();
+  server.scheme = ui_secure_cb->isChecked() ? "wss" : "ws";
   server.description = ui_description->toPlainText();
   return server;
 }