Tvheadend

edit: solved. Sometimes the solution looks you right in the eye and you can't see it..... I had to change the ip adress in NewCS from 127.0.0.1 to 192.168.1.56 because now NewCS and tvheadend are not on the same systems.....

I'm having a lot of trouble to get TVHeadend working with Oscam. It won't work with Newcamd and DVBAPI for some reason I can't figure out. I had a working TV Mosaic setup, but regrettable this software is end of life and stopped working. But what I still have is a working NewCS install on my Windows server. So I was thinking, it should be easy to link that to TVheadend on my Synology. But as easy as it sounds..... I cannot get it to work.

What do I have:
Windows 10 server with NewCS on 192.168.1.56. The port is 15050, and NeCS states that 'Newcamd thread server started on port 15050'. As I have said, this works with TV Mosaic. The config file says:

<newCSconfig>

    <globals>
        <listening-ip>127.0.0.1</listening-ip>
    </globals>

    <readers name="Card Readers">
        <device>
            <name>reader1</name>
            <enabled>yes</enabled>
            <type>Phoenix</type>
            <node>COM3</node>
            <mhz>600</mhz>
            <parity>even</parity>
            <export>yes</export>
            <irdetomode>0</irdetomode>
            <irdeto-camkey>removed for online purposes</irdeto-camkey>
            <irdeto-camkey-data>removed for online purposes</irdeto-camkey-data>
            <blocksa>no</blocksa>
            <blockua>no</blockua>
            <blockga>no</blockga>
            <blockc0>yes</blockc0>
            <Seca-PPV>no</Seca-PPV>
            <PTShandshake>no</PTShandshake> 
            <crypto-special>no</crypto-special>
            <carddetect>no</carddetect>
            <priority>round</priority>
            <autosid>yes</autosid>
            <newcamd_port>15050</newcamd_port>
        </device>
    </readers>

    <cache>
        <emm>20</emm>
        <ecm>-1</ecm>
    </cache>    

    <debug>
        <level>normal</level>    
        <type>init</type>
        <output>console</output>
        <console_options>normal, init</console_options>
        <tcp_port>1001</tcp_port>
        <password>DebugPass</password>
        <tcp_options>normal, init</tcp_options>
    </debug>

    <newcamdserver>
        <enabled>yes</enabled>
        <deskey>01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E</deskey>
        <name>newcs</name>
                <user>
                        <name>gebruiker1</name>
                        <password>wachtwoord1</password>
                        <au>on</au>
                        <allow>reader1</allow>
                        <spider>no</spider>
                </user>
                <user>
                        <name>gebruiker2</name>
                        <password>wachtwoord2</password>
                        <au>on</au>
                        <allow>reader1</allow>
                        <spider>no</spider>
                </user>
                <user>
                        <name>gebruiker3</name>
                        <password>wachtwoord3</password>
                        <au>on</au>
                        <allow>reader1</allow>
                        <spider>no</spider>
                </user>
                <user>
                        <name>gebruiker4</name>
                        <password>wachtwoord4</password>
                        <au>on</au>
                        <allow>reader1</allow>
                        <spider>no</spider>
                </user>
    </newcamdserver>

    <httpd>
        <server>
            <enabled>no</enabled>
        </server>
    </httpd>

    <radegastserver>
            <enabled>no</enabled>
    </radegastserver>

</newCSconfig>

Then I create a new CAs in TVHeadend on my Synology (192.168.1.17). I use:
enabled yes
client name newcs
username gebruiker1
password wachtwoord1
port 15050
des key 01:02:03:04:05:06:07:08:09:0a:0b:0c:0d:0e
update card EMM enabled
updates from one mux (EMM) enabled
keepalive interval 30

pretty straightforward. Or so I thought. The log keeps repeating:

2020-06-28 14:22:04.499 cwc: 192.168.1.56:15050: Connection failed: Connection refused
2020-06-28 14:22:04.499 cwc: 192.168.1.56:15050: Automatic connection attempt in 2 seconds
2020-06-28 14:22:07.458 cwc: 192.168.1.56:15050: Attemping to connect to server
2020-06-28 14:22:07.459 cwc: 192.168.1.56:15050: Connection failed: Connection refused
2020-06-28 14:22:07.459 cwc: 192.168.1.56:15050: Automatic connection attempt in 2 seconds

I hope someone sees the mistake I make. To be sure I disabled my firewall completely, but nothing changes.