jfjoch_viewer: Environment variables JUNGFRAUJOCH_HTTP_HOST and JUNGFRAUJOCH_HTTP_PORT

viewer/JFJochViewerMenu.cpp

@@ -127,12 +127,26 @@ void JFJochViewerMenu::openHttpSelected() {
     layout->addWidget(new QLabel(":"), 0, 2);
 
     QLineEdit *hostEdit = new QLineEdit(&dialog);
-    hostEdit->setText("localhost");
+
+    char *host = std::getenv("JUNGFRAUJOCH_HTTP_HOST");
+    if (host != nullptr)
+        hostEdit->setText(host);
+    else
+        hostEdit->setText("localhost");
     layout->addWidget(hostEdit, 0, 1);
 
+
     QSpinBox *portSpinBox = new QSpinBox(&dialog);
     portSpinBox->setRange(1, 65535);
-    portSpinBox->setValue(5232);
+
+    char *port_std = std::getenv("JUNGFRAUJOCH_HTTP_PORT");
+    if (port_std != nullptr) {
+        const int tmp = std::stoi(std::string(port_std));
+        if (tmp < 65536 && tmp > 0)
+            portSpinBox->setValue(tmp);
+    } else
+        portSpinBox->setValue(8080);
+
     layout->addWidget(portSpinBox, 0, 3);
 
     QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);