How to use deriveaddresses via a curl command

Question

I am trying to use curl via SSH to utilize the deriveaddresses bitcoin-cli rpc command.

let descriptor = "wpkh(xpub6Dy2ikUu5mXbDdhw2vAP1C4eiQM8rTz1NiWQt2BzGi83iHC2gEgTSD54JveyuHF9VLAqNkCGnee1jdBL7nA3JNorbqjSSS8DEV6Hn3PuNBt/*)#mn5jvyc3"

    let command = "curl --data-binary '{\"jsonrpc\": \"1.0\", \"id\":\"curltest\", \"method\": \"deriveaddresses\", \"params\": [\"\(descriptor)\" 99] }' -H 'content-type: text/plain;' http://user:[email protected]:8332/"

    var error: NSError?

    let queue = DispatchQueue(label: "com.app.getInitialNodeConnection")
    queue.async {

        if let responseString = self.ssh.session?.channel.execute(command, error: &error) {

            guard let responseData = responseString.data(using: .utf8) else { return }

            do {

                let json = try JSONSerialization.jsonObject(with: responseData, options: [.allowFragments]) as Any

                print("json = \(json)")

            } catch {


            }

        }

    }`

I get the following error:

json = { error = { code = "-32700"; message = "Parse error"; }; id = "<null>"; result = "<null>"; }

Is it not working because I need to escape special characters in the descriptor?

Answer 1

I figured it out, just need a comma after the descriptor param.

let descriptor = "\"wpkh(xpub6Dy2ikUu5mXbDdhw2vAP1C4eiQM8rTz1NiWQt2BzGi83iHC2gEgTSD54JveyuHF9VLAqNkCGnee1jdBL7nA3JNorbqjSSS8DEV6Hn3PuNBt/*)#mn5jvyc3\""

    let command = "curl --data-binary '{\"jsonrpc\": \"1.0\", \"id\":\"curltest\", \"method\": \"deriveaddresses\", \"params\":[\(descriptor), 99] }' -H 'content-type: text/plain;' http://user:[email protected]:8332/"

    var error: NSError?

    let queue = DispatchQueue(label: "com.FullyNoded.getInitialNodeConnection")
    queue.async {

        if let responseString = self.ssh.session?.channel.execute(command, error: &error) {

            guard let responseData = responseString.data(using: .utf8) else { return }

            do {

                let json = try JSONSerialization.jsonObject(with: responseData, options: [.allowFragments]) as Any

                print("json = \(json)")

            } catch {


            }

        }

    }`