add AddSendOscTarget blueprint function

OSC/Source/OSC/Private/Common/OscFunctionLibrary.cpp

@@ -185,3 +185,8 @@ void UOscFunctionLibrary::SendOsc(FName Address, const TArray<FOscDataElemStruct
     check(reinterpret_cast<const void *>(buffer) == reinterpret_cast<const void *>(output.Data()));
     GetMutableDefault<UOscSettings>()->Send(buffer, output.Size(), TargetIndex);
 }
+
+int32 UOscFunctionLibrary::AddSendOscTarget(FString IpPort)
+{
+    return GetMutableDefault<UOscSettings>()->GetOrAddSendTarget(IpPort);
+}

OSC/Source/OSC/Private/Common/OscFunctionLibrary.h

@@ -87,4 +87,17 @@ public:
      */
     UFUNCTION(BlueprintCallable, Category=OSC, meta=(AutoCreateRefTerm = "Data"))
     static void SendOsc(FName Address, const TArray<FOscDataElemStruct> & Data, int32 TargetIndex);
+
+    /**
+     *  @brief Add Ip:Port to the available OSC send targets.
+     *  @param IpPort "ip:port". e.g. "192.168.0.1:7777"
+     *  @return The created TargetIndex to pass to the SendOsc function.
+     *
+     *  Use this function to add target at runtime. Generally, it is best
+     *  to define your targets in the OSC plugin settings.
+     *
+     *  @see SendOsc
+     */
+    UFUNCTION(BlueprintCallable, Category=OSC)
+    static int32 AddSendOscTarget(FString IpPort);
 };

OSC/Source/OSC/Private/OscModule.cpp

@@ -91,7 +91,7 @@ public:
 #endif
 
         // send settings
-        settings->UpdateSendAddresses();
+        settings->InitSendTargets();
 
         // input settings
         settings->UpdateKeyInputs(*_dispatcher);

OSC/Source/OSC/Private/OscSettings.cpp

@@ -17,35 +17,59 @@ UOscSettings::UOscSettings(FVTableHelper & helper)
     // Does not need to be a valid object.
 }
 
-void UOscSettings::UpdateSendAddresses()
+void UOscSettings::InitSendTargets()
 {
+    UE_LOG(LogOSC, Display, TEXT("Send targets cleared"));
+
     FString addressStr, portStr;
+
+    _sendAddresses.Empty();
+    _sendAddresses.Reserve(SendTargets.Num());
+
+    _sendAddressesIndex.Empty();
+    _sendAddressesIndex.Reserve(SendTargets.Num());
+
     for(int32 i=0, n=SendTargets.Num(); i!=n; ++i)
     {
-        if(i >= _sendAddresses.Num())
-        {
-            _sendAddresses.Emplace(FString(), ISocketSubsystem::Get(PLATFORM_SOCKETSUBSYSTEM)->CreateInternetAddr());
-        }
-
-        if(_sendAddresses[i].first != SendTargets[i])
-        {
-            FIPv4Address address(0);
-            uint32_t port;
-            if(Parse(SendTargets[i], &address, &port) && address != FIPv4Address::Any)
-            {
-                _sendAddresses[i].second->SetIp(address.GetValue());
-                _sendAddresses[i].second->SetPort(port);
-
-                _sendAddresses[i].first = SendTargets[i];
-            }
-            else
-            {
-                UE_LOG(LogOSC, Error, TEXT("Fail to parse or invalid send address: %s"), *SendTargets[i]);
-            }
-        }
+        const auto result = AddSendTarget(SendTargets[i]);
+        check(result == i);
     }
 }
 
+int32 UOscSettings::GetOrAddSendTarget(const FString & ip_port)
+{
+    const int32 * result = _sendAddressesIndex.Find(ip_port);
+    if(result)
+    {
+        return *result;
+    }
+
+    return AddSendTarget(ip_port);
+}
+
+int32 UOscSettings::AddSendTarget(const FString & ip_port)
+{
+    auto target = ISocketSubsystem::Get(PLATFORM_SOCKETSUBSYSTEM)->CreateInternetAddr();
+
+    FIPv4Address address(0);
+    uint32_t port;
+    if(Parse(ip_port, &address, &port) && address != FIPv4Address::Any)
+    {
+        target->SetIp(address.GetValue());
+        target->SetPort(port);
+        UE_LOG(LogOSC, Display, TEXT("Send target added: %s"), *ip_port);
+    }
+    else
+    {
+        UE_LOG(LogOSC, Error, TEXT("Fail to parse or invalid send target: %s"), *ip_port);
+    }
+
+    const auto result = _sendAddresses.Num();
+    _sendAddressesIndex.Emplace(ip_port, result);
+    _sendAddresses.Emplace(target);
+    return result;
+}
+
 static void SendImpl(FSocket *socket, const uint8 *buffer, int32 length, const FInternetAddr & target)
 {
     int32 bytesSent = 0;
@@ -63,7 +87,7 @@ void UOscSettings::Send(const uint8 *buffer, int32 length, int32 targetIndex)
     {
         for(const auto & address : _sendAddresses)
         {
-            SendImpl(&_sendSocket.Get(), buffer, length, *address.second);
+            SendImpl(&_sendSocket.Get(), buffer, length, *address);
         }
 
 #if !NO_LOGGING
@@ -79,7 +103,7 @@ void UOscSettings::Send(const uint8 *buffer, int32 length, int32 targetIndex)
     }
     else if(targetIndex < _sendAddresses.Num())
     {
-        SendImpl(&_sendSocket.Get(), buffer, length, *_sendAddresses[targetIndex].second);
+        SendImpl(&_sendSocket.Get(), buffer, length, *_sendAddresses[targetIndex]);
 
 #if !NO_LOGGING
         // Log sent packet
@@ -88,7 +112,7 @@ void UOscSettings::Send(const uint8 *buffer, int32 length, int32 targetIndex)
             TArray<uint8> tmp;
             tmp.Append(buffer, length);
             const auto encoded = FBase64::Encode(tmp);
-            const auto target  = _sendAddresses[targetIndex].second->ToString(true);
+            const auto target  = _sendAddresses[targetIndex]->ToString(true);
             UE_LOG(LogOSC, Verbose, TEXT("SentTo %s: %s"), *target, *encoded);
         }
 #endif
@@ -99,9 +123,9 @@ void UOscSettings::Send(const uint8 *buffer, int32 length, int32 targetIndex)
     }
 }
 
-bool UOscSettings::Parse(const FString & address_port, FIPv4Address * address, uint32_t * port)
+bool UOscSettings::Parse(const FString & ip_port, FIPv4Address * address, uint32_t * port)
 {
-    if(address_port.IsEmpty())
+    if(ip_port.IsEmpty())
     {
         return false;
     }
@@ -110,16 +134,16 @@ bool UOscSettings::Parse(const FString & address_port, FIPv4Address * address, u
     uint32_t portResult;
 
     int32 sep = -1;
-    if(address_port.FindChar(TEXT(':'), sep))
+    if(ip_port.FindChar(TEXT(':'), sep))
     {
-        const auto ip = address_port.Left(sep).Trim();
+        const auto ip = ip_port.Left(sep).Trim();
         if(!FIPv4Address::Parse(ip, addressResult))
         {
             return false;
         }
     }
     
-    portResult = FCString::Atoi(&address_port.GetCharArray()[sep+1]);
+    portResult = FCString::Atoi(&ip_port.GetCharArray()[sep+1]);
     if(portResult == 0)
     {
         return false;

OSC/Source/OSC/Private/OscSettings.h

@@ -45,7 +45,9 @@ public:
     TArray<FString> Inputs;
 
 public:
-    void UpdateSendAddresses();
+    void InitSendTargets();
+
+    int32 GetOrAddSendTarget(const FString & ip_port);
 
     void Send(const uint8 *buffer, int32 length, int32 targetIndex);
 
@@ -59,10 +61,14 @@ public:
      *  @brief Parse "8000" and "192.168.0.12" to IP and port values.
      *  @return true if succeed
      */
-    static bool Parse(const FString & address_port, FIPv4Address * address, uint32_t * port);
+    static bool Parse(const FString & ip_port, FIPv4Address * address, uint32_t * port);
+
+private:
+    int32 AddSendTarget(const FString & ip_port);
 
 private:
     TSharedRef<FSocket> _sendSocket;
-    TArray<std::pair<FString, TSharedRef<FInternetAddr>>> _sendAddresses;
+    TArray<TSharedRef<FInternetAddr>> _sendAddresses;
+    TMap<FString, int32> _sendAddressesIndex;
     TArray<OscReceiverInputKey> _keyReceivers;
 };