与 node-firebird 连接时出现错误“客户端和服务器上请求的有线加密级别不兼容”

Question

I'm trying to connect my script with my database in Firebird, but I have this error.

This is my code, I'm trying to connect to my local database:

const Firebird = require('node-firebird');

var options = {};
options.host = '127.0.0.1';
options.port = 3050;
options.database = 'C:\\DATABASES\\PRUEBA.FDB';
options.user = 'SYSDBA';
options.password = 'password';
options.lowercase_keys = false; // set to true to lowercase keys
options.role = null;            // default
options.pageSize = 4096;  

Firebird.attach(options, (err, db) => {
  if (err) console.log(err);

  db.query('select * from temp', (err, response) => {
    if (err) console.log(err);

    console.log(response);
  })
})

The error is this, but I don't know what happens:

Incompatible wire encryption levels requested on client and server

Answer 1

This error "Incompatible wire encryption levels requested on client and server" occurs when you're using Firebird 3 and either the server or the client requires wire encryption, and the other side (usually the client) has wire encryption disabled. In this case, you're using node-firebird, and it doesn't support wire encryption, and always reports it as disabled :

blr.addBytes([CNCT_client_crypt, 4, WIRE_CRYPT_DISABLE, 0, 0, 0]); // WireCrypt = Disabled

On the other hand, the default configuration of Firebird 3 requires wire encryption. In order to connect, you will need to relax this setting from its default of Required to Enabled (or Disabled , but that is less secure for applications that do support wire encryption).

You do this by editing firebird.conf of your server, and modifying or adding:

WireCrypt = Enabled

and then restarting your Firebird server.