{
"sessid": "some_value",
"session_name": "some_vvalue",
"token": "some_vvalue",
"user": {
    "uid": "12125",
    "name": "some_vvalue",
    "mail": "some_vvalue",
    "theme": "",
    "signature": "",
    "signature_format": "filtered_html",
    "created": "1486476553",
    "access": "1489577945",
    "login": 1489585116,
    "status": "1",
    "timezone": "Asia/Kolkata",
    "language": "",
    "picture": "0",
    "data": false,
    "roles": {
        "2": "authenticated user"
    },
    "rdf_mapping": {
        "rdftype": ["sioc:UserAccount"],
        "name": {
            "predicates": ["foaf:name"]
        },
        "homepage": {
            "predicates": ["foaf:page"],
            "type": "rel"
        }
    }
}

async onPressLogin() {
try {

  loaderHandler.showLoader("Please wait!!!");
  let response = await fetch(
    'http://some_url/api/user/login', {
      method: 'POST',
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json',
        'X-CSRF-Token': this.state.token,
      },
      body: JSON.stringify({
        username: this.state.name,
        password: this.state.password,
      })
  });
  let responseText = await response.text();
  let responseJson = await response.json();

  if (response.status >= 200 && response.status < 300){


     await AsyncStorage.setItem(SESSION_TOKEN, responseJson.token);
     await AsyncStorage.setItem(SESSION_NAME,responseJson.session_name);
     await AsyncStorage.setItem(SESSION_ID,responseJson.sessid);

     Alert.alert('Store Token', 'Session Token'+responseJson.token)

  ///  Alert.alert('Server response', responseJson)
    loaderHandler.hideLoader();
    Actions.Documents();
  }
  else {
    loaderHandler.hideLoader();
    let error = responseText;

    Alert.alert('Login', error)
  }
} catch(errors) {
  loaderHandler.hideLoader();
  Alert.alert('Login_server', errors)
loaderHandler.hideLoader();
}