Calling class constructor with parameters

[aimardcr]

I'm new using frida-il2cpp-bridge and I'm wondering how do I call constructor with parameters?

This is currently how I call constructor using default new() function

import "frida-il2cpp-bridge";

Il2Cpp.perform(() => {
    const mainAssembly = Il2Cpp.Domain.assembly('Assembly-CSharp').image;

    const GameReceiveMessage = mainAssembly.class('GameReceiveMessage'); {
        GameReceiveMessage.method('GameSocketOnRecv').implementation =
        function(retMsg: Il2Cpp.Object) {
            const SdpWrapper = mainAssembly.class('MTTDProto.SdpWrapper');
            const sdpWrapper = SdpWrapper.new(); //

            return this.method('GameSocketOnRecv').invoke(retMsg);
        }
    };
});

And this is the class:

// Assembly-CSharp
class MTTDProto.SdpWrapper : System.Object
{
    static System.Int32 DefaultBufferLen; // 0x0
    static System.Byte[] _bySdpPackerData; // 0x8
    static System.Collections.Generic.Dictionary<System.Type,System.Collections.Generic.Stack<MTTDProto.SdpWrapper>> cacheDic; // 0x10
    System.Void visit(MTTDProto.SdpPacker t, System.Boolean bOpt);
    System.Void visit(MTTDProto.SdpUnpacker t, System.Boolean bOpt);
    static System.Byte[] sdpToLargeBytes(MTTDProto.SdpWrapper sdp, System.Int32 iLen); // 0xffffffffc7ddfe84
    static System.Byte[] sdpToBytes(MTTDProto.SdpWrapper sdp, System.Byte[] tmpBytes, System.Int32 tmpByteMaxLen, System.Boolean bNeedStructTag); // 0xffffffffc7de0000
    static System.Void FreeSdpObj(MTTDProto.SdpWrapper sdpWrapper); // 0xffffffffc7de02fc
    static MTTDProto.SdpWrapper GetSdpObj(System.Type type); // 0xffffffffc7de0464
    static MTTDProto.SdpWrapper PeekSdpObj(System.Type type); // 0xffffffffc7de052c
    static MTTDProto.SdpWrapper bytesToSdp(System.Byte[] s);
    static MTTDProto.SdpWrapper bytesToSdp(System.Byte[] s, System.Type type); // 0xffffffffc7de05f4
    static MTTDProto.SdpWrapper bytesToSdpCached(System.Byte[] s, System.Type type, System.Boolean bNeedStructTag); // 0xffffffffc7de06c4
    System.Void .ctor(); // 0xffffffffc7dcfeb0
    System.Void .ctor(Type type); // 0xffffffffc7dcfeb0
    static System.Void .cctor(); // 0xffffffffc7de080c
}

How do I instead create constructor using the System.Void .ctor(Type type) constructor?

[berkedel]

Have you tried this?

const sdpWrapper = SdpWrapper.alloc()
sdpWrapper.method(".ctor", 1).invoke(type)

[aimardcr]

Yes it works, thank you!