Error: 552 message: 'Transport endpoint is not connected'

[former_member199619]

Hi,

I am able to fetch data from the backend using the Netweaver gateway services via SUP into my Android application running on emulator(which is in internal network).

When I am trying to run the application from outside the network, I am getting the Error 552: 'Transport endpoint is not connected'.

    ERROR/ODP(313): Y8xN5198 (com.sybase.mobile.lib.client.SUPServerRmiCalls:makeRequest:386) Exception while making request

    ERROR/ODP(313): Error: 552 Message: 'Transport endpoint is not connected'

    ERROR/ODP(313):     at com.sybase.mo.MoObject.ConvertTmExceptionToMoException(MoObject.java:889)

    ERROR/ODP(313):     at com.sybase.mo.MoObject.execute(MoObject.java:704)

    ERROR/ODP(313):     at com.sybase.mobile.lib.client.SUPServerRmiCalls.makeRequest(SUPServerRmiCalls.java:214)

    ERROR/ODP(313):     at com.sybase.mobile.lib.client.SUPServerRmiCalls.makeRequest(SUPServerRmiCalls.java:377)

    ERROR/ODP(313):     at com.sybase.mobile.lib.client.IMOConnectionFactory.makeRequest(IMOConnectionFactory.java:310)

    ERROR/ODP(313):     at com.sybase.mobile.lib.client.IMOConnectionHandler.performRequest(IMOConnectionHandler.java:353)

    ERROR/ODP(313):     at com.sybase.mobile.lib.client.IMOConnectionHandler.makeHttpRequest(IMOConnectionHandler.java:186)

    ERROR/ODP(313):     at com.sap.mobile.lib.sdmconnectivity.AbstractConnectionHandler.processRequestType(AbstractConnectionHandler.java:170)

    ERROR/ODP(313):     at com.sap.mobile.lib.sdmconnectivity.AbstractConnectionHandler.processRequestsFromQueue(AbstractConnectionHandler.java:130)

    ERROR/ODP(313):     at com.sybase.mobile.lib.client.IMOConnectionHandler.run(IMOConnectionHandler.java:103)

Can anyone help me in resolving the issue.

Thanks in advance.

Regards,

Shyam

[midhun_vp · Accepted solution]

In order to access SUP from public network you need to use the public IP of the SUP server instead of private IP (a relay server is recommended instead of exposing ports to the public ) . Are you using the public IP when connecting from public network ? You need to open the port 5001 to the public also.

- Midhun VP

[former_member199619]

Thank you very much Midhun, Jitendra and Chetan.

I am able to connect and fetch data onto my device now.

Shyam

[former_member199619]

Hi Midhun,

Yes, I am using public IP when connecting from the public network. But i have to check whether the port 5001 is opened to the public.

Hi Jitendra,

I am trying to connect to SUP server directly. Our SUP server is in DMZ zone. We are not using relay server.

Shyam

[Jitendra_Kansal]

Hi Shyam,

Can you telnet to port 5001

go to cmd

type 192.168.11.12 2000

Where

192.168.11.12 is public ip

it will connect and give you a blank screen

If the port is not open, it will give you a connection refused message instead of a blank screen.

Rgrds,

Jitendra

[Former Member]

Hi,

Just open the port 5001 for your SUP server on firewall.

[former_member199619]

Hi Jitendra,

Small confusion, Do I need to telnet port 5001 or port 2000 using the public IP?

Shyam

[Former Member]

Yes if you are opening direct ports for your server you need to do telnet for your external ip for both the port

[Jitendra_Kansal]

shyam prasad

in addition to what Chetan has mentioned:

by default

5001 port is used to register the user from device.

2000 port is used to connect SUP server (from workspace)

Rgrds,

Jitendra

[former_member199619]

Hi Jitendra,

But we are not connecting to SUP server from workspace.

We are developing ODATA applications. We have created application endpoint in SCC and using that we consumed the gateway services data into our application.

In ODATA application development also, do we need to open port 2000 for external access.

Shyam

[Jitendra_Kansal]

Ok... did you try telnet to port 5001 ?

[midhun_vp]

No need to open port 2000 since your are developing Odata based app.

Open only the port 5001 to the public.

[former_member199619]

Hi Midhun,

We have asked our network team to open the 5001 port to public. Including 5001, we have asked our network team to open 8000 and 8001 ports also.

Do we need to open any ports other than 5001, 8000 and 8001 in order to connect to SUP server from external network in OData based applications.

Shyam

[Jitendra_Kansal]

Hi Shyam,

is it working after opening port 5001 ?

Rgrds,

Jitendra

[midhun_vp]

I don't understand why you are opening 8000 and 8001 here. No other ports are not required to be opened. Understand one thing that the ports you are mentioning while writing the device code should be accessible. So open these ports always. In your case you must have mentioned 5001 in the device device code for communition. So open that.

[Jitendra_Kansal]

Hi Shyam,

How r you trying yo access the app from outside ?Are you using relay server ?

Rgrds,

Jitendra