MultiChain Developer Q&A - Recent questions tagged unauthorized

401 unauthorized in multichain-node in windows and linux

Fri, 06 Dec 2019 02:11:38 +0000

I created a new multichain with default values except the anyone-can-connect to true, im trying to connect to multichain-node but i got "401 unauthorized", and "This host is not known" if i try from terminal putting all parameters

port: 8346,

host: '127.0.0.1',

user: 'multichainrpc',

password: 'E5rWYKww2tUHhnTieff8CgEjMTGEK3Ae4Eg1YZxoq7SE' //In multichain.config

I'm using these commands "multichaind test -daemon" or "multichaind test@127.0.0.1 -daemon" to start the multichain, i can use all the commands multichain-cli directly via terminal but JSON-RPC multichain-node i can't

In python (mcrpc) it worked

401 Unauthorized.

Wed, 22 May 2019 08:30:46 +0000

Thanks for your answer. I found the default rpc port and where able to send a request. However, it says 401 Unauthorized. What kind of authorization is needed? I cant find anyhting on that do I have to pass a apikey or something like that?

Multichain Demo: 401 Unauthorized

Thu, 19 Apr 2018 08:42:01 +0000

Hey all,

Got an issue when I try to configure the web demo on a secondary node.

I got it working on my main node with the following configuration:

default.name=Default
default.rpchost=127.0.0.1
default.rpcport=4252
default.rpcuser=User
default.rpcpassword=Password
default.rpcallowip=172.31.254.20

Now Im trying to do the exact same thing on my secondary node.

I use:

default.name=Default
default.rpchost=127.0.0.1
default.rpcport=4252
default.rpcuser=multichainrpc
default.rpcpassword=Arah1fLriC9cR7SeZL8Aqifb7TcfeAeQZixybcdX22xs
default.rpcallowip=10.51.120.192

But this gives me an error:

Error: HTTP 401
Error 401 Unauthorized. http://127.0.0.1:4252/

On my main node I only got it working with 127.0.0.1, but that should also work here right?

The rpcallowip is from the cmd window when I start my node.

Anyone?

Thanks

Unauthorized Error with multichain-node and ssh port forwarding

Mon, 22 May 2017 13:02:46 +0000

Hello,

I am using the multichain-node package to connect to a blockchain which is running on a remote server. For testing my code, I forwarded the remote port to a port on my machine, because the multichain is only accepting requests from localhost. Now I get an Unauthorized Error, and I don't know why. I also set up a rpcuser and rpcpassword in multichain.conf.

Here the connection object:

const connection = {
    port: 7194,
    host: '127.0.0.1',
    user: 'multichainrpc',
    pass: 'MyPass'
};

let multichain = require("multichain-node")(connection);

Do you have any ideas to fix my problem?

Regards,

Andreas K.

Statuscode 401 (Unauthorized)

Thu, 12 Jan 2017 10:28:52 +0000

I use the following code to access a multichain I have setup in AWS.

        // params
        String username = "lorem";
        String password = "ipsum";

        String server = "xxx.xxx.xxx.xxx";
        String port = "xxxx";
        String chainName = "chain1";

        // json
        Map<String,String> params = new HashMap<>();
        params.put("method", "getinfo");
        params.put("id", "1");
        params.put("chain_name", chainName);

        String jsonData = encode(params);
        System.out.println(jsonData);


        String login = username + ":" + password;
        String base64login = new String(Base64.getEncoder().encode(login.getBytes()));

        // build request
        String url = "http://" + server + ":" + port;
        System.out.println(url);
        Document doc = Jsoup.connect(url)
            .header("Authorization", "Basic " + base64login)
            .header("Accept", "application/json")
            .header("Accept-Encoding", "gzip,deflate,sdch")
            .header("Accept-Language", "en-EN,es;q=0.8")
            .header("Connection", "keep-alive")
            .header("X-Requested-With", "XMLHttpRequest")
            .data(jsonData, "")
            .post();

        // send
       System.out.println(doc.toString());

This code, when executed, throws a 401 error.

The multichain.conf file looks like this:
rpcallowip=0.0.0.0/0
rpcuser=lorem
rpcpassword=ipsum

(obviously I changed the username and password)

What am I doing wrong?

Communicating to a Node using RPC remotely fails

Mon, 26 Sep 2016 22:17:04 +0000

Hello all.

I noticed that in params.dat, the default RPC port to communicate with multichain is 2776. From my local computer I try to connect to the multichain instance using wget. I have inbound and outbound security groups enabled for ports 2776 and 2777.

When I try to to communicate using wget, I can get a connection using 2777, but I get a Refused Connection using 2776.

How can I enable communicating to the MC node using port 2776 for RPC calls that are not localhost?

Running multichain using docker and unable to connect to RPC from external service

Tue, 16 Aug 2016 21:45:11 +0000

Hello,

I'm building a service using multichain and deployed a local version on a windows machine using the multichain docker, it works great except I can't connect to the RPC from external app using multichain-node I'm running locally as well.

I'm getting error 401 - Unauthorized.

Any tips?

Thanks!

Edit: Actually solved it easily by setting a simpler and shorter password.