Support setting port dynamically via --port option

Author: soares-sergio

examples/all-devices-app/posix/app_options/AppOptions.cpp

@@ -34,6 +34,7 @@ constexpr uint16_t kOptionKVS           = 0xffd3;
 constexpr uint16_t kOptionDiscriminator = 0xffd4;
 constexpr uint16_t kOptionVendorId      = 0xffd5;
 constexpr uint16_t kOptionProductId     = 0xffd6;
+constexpr uint16_t kOptionPort          = 0xffd7;
 
 DeviceTypeParser AppOptions::sParser;
 AppOptions::AppConfig AppOptions::mConfig;
@@ -75,6 +76,18 @@ bool AppOptions::AllDevicesAppOptionHandler(const char * program, OptionSet * op
     case kOptionProductId:
         mConfig.productId.SetValue(static_cast<uint16_t>(strtoul(value, nullptr, 0)));
         return true;
+    case kOptionPort: {
+        char * endptr;
+        unsigned long val = strtoul(value, &endptr, 0);
+        if (*endptr != '\0' || val > 0xFFFF)
+        {
+            ChipLogError(Support, "Invalid port: %s\n", value);
+            return false;
+        }
+        mConfig.port.SetValue(static_cast<uint16_t>(val));
+        ChipLogProgress(AppServer, "Port option set to %u\n", static_cast<uint16_t>(val));
+        return true;
+    }
     default:
         ChipLogError(Support, "%s: INTERNAL ERROR: Unhandled option: %s\n", program, name);
         return false;
@@ -94,6 +107,7 @@ OptionSet * AppOptions::GetOptions()
         { "discriminator", kArgumentRequired, kOptionDiscriminator },
         { "vendor-id", kArgumentRequired, kOptionVendorId },
         { "product-id", kArgumentRequired, kOptionProductId },
+        { "port", kArgumentRequired, kOptionPort },
         {}, // need empty terminator
     };
 

examples/all-devices-app/posix/app_options/AppOptions.h

@@ -37,6 +37,7 @@ class AppOptions
         chip::Optional<uint16_t> discriminator;
         chip::Optional<uint16_t> vendorId;
         chip::Optional<uint16_t> productId;
+        chip::Optional<uint16_t> port;
     };
 
     static chip::ArgParser::OptionSet * GetOptions();

examples/all-devices-app/posix/main.cpp

@@ -262,7 +262,15 @@ void RunApplication(AppMainLoopImplementation * mainLoop = nullptr)
 
     initParams.dataModelProvider             = &devices.DataModelProvider();
     initParams.groupDataProvider             = &gGroupDataProvider;
-    initParams.operationalServicePort        = CHIP_PORT;
+    if (AppOptions::GetConfig().port.HasValue())
+    {
+        initParams.operationalServicePort = AppOptions::GetConfig().port.Value();
+        ChipLogProgress(AppServer, "Overriding operationalServicePort to %u\n", initParams.operationalServicePort);
+    }
+    else
+    {
+        initParams.operationalServicePort = CHIP_PORT;
+    }
     initParams.userDirectedCommissioningPort = CHIP_UDC_PORT;
     initParams.interfaceId                   = Inet::InterfaceId::Null();