Handshake failed: no matching host key format

Hi There,

I am hoping you can help me trace down this error that’s coming from this lib. we have a service using this library to connect to sftp and when we moved the docker to another host one of the sftp accounts started failing and generating these errors. I can sftp directly from that node to the valid account, however we fail when using this library.

I am a bit unsure what would be causing this, so any direction you can point me in is much appreciated.

Error: Handshake failed: no matching host key format
    at check_KEXINIT (/var/www/node_modules/ssh2-streams/lib/ssh.js:2268:15)
    at check (/var/www/node_modules/ssh2-streams/lib/ssh.js:2179:9)
    at onKEXINIT (/var/www/node_modules/ssh2-streams/lib/ssh.js:2176:5)
    at SSH2Stream.<anonymous> (/var/www/node_modules/ssh2-streams/lib/ssh.js:204:39)
    at emitOne (events.js:77:13)
    at SSH2Stream.emit (events.js:169:7)
    at parse_KEXINIT (/var/www/node_modules/ssh2-streams/lib/ssh.js:4028:8)
    at parsePacket (/var/www/node_modules/ssh2-streams/lib/ssh.js:3927:12)
    at SSH2Stream._transform (/var/www/node_modules/ssh2-streams/lib/ssh.js:652:13)
    at SSH2Stream.Transform._read (_stream_transform.js:167:10)
    at SSH2Stream._read (/var/www/node_modules/ssh2-streams/lib/ssh.js:236:15)
    at SSH2Stream.Transform._write (_stream_transform.js:155:12)

[jasoncheow]

@Pushpinder2751 The following example works for me:

var ssh2 = require('ssh2')
var Client = require('ssh2').Client
var conn = new Client()
conn.on('ready', () => {
  console.log('Client :: ready')
}).connect({
  host: 'xxx',
  port: '22',
  username: 'xxx',
  password: 'xxx',
  algorithms: {
    serverHostKey: ['ssh-rsa', 'ssh-dss']
  }
})

[mscdex]

As I previously mentioned, you can already change the list of algorithms used during the handshake by setting the algorithms property of the connection config appropriately, so there is no need to modify the module’s source code. For example:

ssh.connect({
  // ...
  algorithms: {
    serverHostKey: [ 'ssh-rsa', 'ssh-dss' ],
  }
});