Register open62541 server to Local Discovery Server (LDS)

[adriana...@gmail.com]

I am trying to register my open62541 server to the Local Discovery Server running on the same machine. However, I get the following error:

[2018-06-04 13:00:37.720 (UTC-0400)] error/client       Connecting to the discovery server failed with statuscode BadSecureChannelIdInvalid

[2018-06-04 13:00:37.720 (UTC-0400)] error/server       Could not register server with discovery server. Is the discovery server started? StatusCode BadSecureChannelIdInvalid

I have another server (written using UnifiedAutomation) that's able to connect to the LDS, so I know it is running. Here is the code I use to initialize and start my server:

    /* Load certificate and private key */

    UA_ByteString certificate = loadFile("server_cert.der");

    UA_ByteString privateKey = loadFile("server_key.der");

    /* Load the trustlist */

    UA_ByteString *trustList = (UA_ByteString *) UA_Array_new(1, &UA_TYPES[UA_TYPES_BYTESTRING]);

    size_t trustListSize = 1;

    UA_ByteString_copy(&certificate, &trustList[0]);

    /* Loading of a revocation list currently unsupported */

    UA_ByteString *revocationList = NULL;

    size_t revocationListSize = 0;

    UA_ServerConfig *config = UA_ServerConfig_new_basic128rsa15(4841, &certificate, &privateKey,

                                                                trustList, trustListSize,

                                                                revocationList, revocationListSize);

    UA_Server *server = UA_Server_new(config);

    /* Try to register server to LDS */

    UA_StatusCode retval =

            UA_Server_addPeriodicServerRegisterCallback(server,

                                                        "opc.tcp://localhost:4840",

                                                        10 * 60 * 1000,

                                                        500,

                                                        NULL);

    /* Run the server */

    retval = UA_Server_run(server, &running);

    return (int)retval;

The certificate and private key were generated using the create_self-signed.py script located in /tools/certs, and I copied those two files into my project files. I use UaExpert to try to connect to my server, but I get the message "Connecting failed with error 'BadSecurityChecksFailed'" when I choose an endpoint higher than None. 

How can I enable my server to connect to the LDS? Thanks.

[Stefan Profanter]

Hi Adriana,

can you create a new issue for this on github, so that we can keep track of it?

https://github.com/open62541/open62541/issues

Please indicate there which LDS you are using, which version of open62541 and all the necessary steps to reproduce it.

One short remark:

It could be that your LDS requires some specific client settings. It is only supported in current master branch to use your own client for the register call:

See:

https://github.com/open62541/open62541/blob/master/examples/discovery/server_register.c#L94

BR

Stefan