title: Authentication with database in Flexisip (Linphone SIP server)
body: <p>I successfully installed Flexisip on server CentOS 7.
  But now I cannot config Authentication of Flexisip with database MySQL</p>
  
  <p>My database has table users 'flexisip_users' with columns: id, username, password (not hashed).</p>
  
  <p>This is my config:</p>
  
  <pre><code>[module::Authentication]
  enabled=true
  db-implementation=odbc
  datasource==DRIVER={MySQL};SERVER=localhost;DATABASE=voicechat;USER=root;PASSWORD=abc2016@123;OPTION=3;
  hashed-passwords=false
  request=select password from flexisip_users where username = :id
  </code></pre>
  
  <p>if I using db-implementation=file, authentication perfect working. But when i switch to 'odbc' with above config, client receive error "Internal server error'.</p>
  
  <p>how do I fix it ?</p>