"Connection Closed before request completed" error when update with long string on SQL Server

I have a table in SQL Server with a column of type varbinary. I use STRING.BINARY to model the column in Sequelize.

      signature: {
        type: DataTypes.STRING.BINARY,
        allowNull: true,
        field: 'Signature',
        get() {
          let s = this.getDataValue('signature');
          if (s) {
            let buf = Buffer.from(s);
            return buf.toString('base64');
          } else {
            return null;
          }
        },
        set(val) {  /* not working. Sequelize stop generating create/update statement. */
          let buf = Buffer.from(val, 'base64');
          this.setDataValue('signature', buf);
        },
      },

I use GraphQL to create service. So the signature column uses base64 string type in the API. In the get() method, I convert the binary data to base64 string and it is working fine. But how do I set the base64 string to binary type in the set() method?

[ricklang]

It looks like a problem with tedious. I file a new issue there. tedious issue 923.

[ricklang]

Looks like increase the tedious packet size could solve the problem.

options: {
   packetSize: 65536

But I don’t know how it will affect the perfornance. Also whether I can set it just on a query by query basis.