Error [InvalidAsn1Error]: Expected 0x2: got 0x3

[ajay340]

I am trying to create a client to connect my company's ldap. However, I receive an error
jse_shortmsg: 'Parser error for 1__ldap://company:port', jse_cause: Error [InvalidAsn1Error]: Expected 0x2: got 0x3
My code:

const ldap = require("ldapjs");
const client = ldap.createClient({
    url : 'ldap://company:port',
});

client.on("error", (err) => {
    console.log("Client experienced an error: ", err);
});

async function searchUserbyUID(uid) {
    try{
        var opts ={
            filter: `(uid=${uid})`,
            scope: 'sub',
            attributes: ['dn', 'sn', 'cn']
        }
        client.search("o=company", opts, (res) => {
            return res;
        });
    } catch (Exception) {
        console.log(Exception)
    }
}

The full traceback:

VError: Parser error for 1__ldap://company:port: Expected 0x2: got 0x3
    at Parser.onParseError (/dir/node_modules/ldapjs/lib/client/client.js:888:26)
    at Parser.emit (node:events:378:20)
    at Parser.write (/dir/node_modules/ldapjs/lib/messages/parser.js:103:10)
    at Socket.onData (/dir/node_modules/ldapjs/lib/client/client.js:871:22)
    at Socket.emit (node:events:378:20)
    at addChunk (node:internal/streams/readable:313:12)
    at readableAddChunk (node:internal/streams/readable:288:9)
    at Socket.Readable.push (node:internal/streams/readable:227:10)
    at TCP.onStreamRead (node:internal/stream_base_commons:190:23) {
  jse_shortmsg: 'Parser error for 1__ldap://company:port',
  jse_cause: Error [InvalidAsn1Error]: Expected 0x2: got 0x3
      at newInvalidAsn1Error (/dir/node_modules/asn1/lib/ber/errors.js:7:13)
      at Reader._readTag (/dir/node_modules/asn1/lib/ber/reader.js:230:11)
      at Reader.readInt (/dir/node_modules/asn1/lib/ber/reader.js:146:15)
      at Parser.getMessage (/dir/node_modules/ldapjs/lib/messages/parser.js:116:25)
      at Parser.write (/dir/node_modules/ldapjs/lib/messages/parser.js:96:20)
      at Socket.onData (/dir/node_modules/ldapjs/lib/client/client.js:871:22)
      at Socket.emit (node:events:378:20)
      at addChunk (node:internal/streams/readable:313:12)
      at readableAddChunk (node:internal/streams/readable:288:9)
      at Socket.Readable.push (node:internal/streams/readable:227:10),
  jse_info: {}
}

[UziTech]

I'm not 100% sure but I think the error is saying that it expected an int and received a bit string. This might be an issue with the server.

[jsumners]

I think you're showing that the error is happening during the searchUserbyUID invocation. So I agree with @UziTech. This looks like your server returning an unexpected ASN.1 message. Which means ldapjs is operating as it should by providing you with the error.

[ajay340]

Commenting out this function and just creating the client connection, I receive this same traceback on error.

[jsumners]

Unfortunately, without a way to reproduce it all we can do is guess at things.

Have you enabled trace logging? https://github.com/ldapjs/node-ldapjs/blob/1570e049526fffc47df00615ce48860cf3da77b3/docs/client.md#note-on-logger

Have you tried stepping through it with the debugger and inspecting the messages/processing?

[ajay340]

Unfortunately, without a way to reproduce it all we can do is guess at things.

Have you enabled trace logging? https://github.com/ldapjs/node-ldapjs/blob/1570e049526fffc47df00615ce48860cf3da77b3/docs/client.md#note-on-logger

Have you tried stepping through it with the debugger and inspecting the messages/processing?

What type of information should I be looking for when I inspect through my debugger?

[jsumners]

🤷‍♂️

[ghost]

@ajay340 did you solve this problem?

[jsumners]

👋

On February 22, 2023, we released version 3 of this library. As a result, we are closing this issue/pull request.

Please see issue #839 for more information, including how to proceed if you feel this closure is in error.