Get User Online Status

Get online status information for multiple users

POST /user/onlinestatus

cURL

curl -X POST "http://localhost:5001/user/onlinestatus" \
  -H "Content-Type: application/json" \
  -d '["user1", "user2", "user3"]'

Success Response

[
  {
    "uid": "user1",
    "online": 1,
    "device_flag": 1
  },
  {
    "uid": "user2",
    "online": 0,
    "device_flag": 0
  },
  {
    "uid": "user3",
    "online": 1,
    "device_flag": 2
  }
]

Overview

Get online status information for multiple users, including whether they are online and device type.

Request Body

The request body is an array of user ID strings:

["user1", "user2", "user3"]

cURL

curl -X POST "http://localhost:5001/user/onlinestatus" \
  -H "Content-Type: application/json" \
  -d '["user1", "user2", "user3"]'

Success Response

[
  {
    "uid": "user1",
    "online": 1,
    "device_flag": 1
  },
  {
    "uid": "user2",
    "online": 0,
    "device_flag": 0
  },
  {
    "uid": "user3",
    "online": 1,
    "device_flag": 2
  }
]

Response Fields

The response is an array, each element contains the following fields:

uid · string · required

User ID

online · integer · required

Online status

• 0 - Offline
• 1 - Online

device_flag · integer · required

Device identifier

• 0 - App (Android, iPhone, iPad devices)
• 1 - Web (Browser, Web applications)
• 2 - Desktop (Desktop applications)

Status Codes

Status Code	Description
200	Successfully retrieved user online status
400	Request parameter error
500	Internal server error

Use Cases

Contact List Status

Display online status indicators in contact lists:

// Get online status for contact list
const contactIds = ["friend1", "friend2", "colleague1"];
const statuses = await getUserOnlineStatus(contactIds);

// Update UI with status indicators
statuses.forEach(status => {
  updateContactStatus(status.uid, status.online, status.device_flag);
});

Group Member Status

Check online status of group members:

// Get group member online status
const groupMembers = ["member1", "member2", "member3"];
const memberStatuses = await getUserOnlineStatus(groupMembers);

// Show online member count
const onlineCount = memberStatuses.filter(s => s.online === 1).length;
console.log(`${onlineCount} members online`);

Presence Indicators

Implement presence indicators in chat interfaces:

// Real-time presence updates
function updatePresenceIndicators(userStatuses) {
  userStatuses.forEach(status => {
    const indicator = document.querySelector(`[data-user="${status.uid}"] .presence`);
    if (indicator) {
      indicator.className = status.online ? 'presence online' : 'presence offline';
      indicator.title = getDeviceTypeName(status.device_flag);
    }
  });
}

function getDeviceTypeName(deviceFlag) {
  const deviceTypes = {
    0: 'Mobile App',
    1: 'Web Browser', 
    2: 'Desktop App'
  };
  return deviceTypes[deviceFlag] || 'Unknown';
}

Best Practices

1. Batch Requests: Query multiple users in a single request to reduce API calls
2. Caching: Cache online status for a short period to avoid excessive requests
3. Real-time Updates: Combine with WebSocket events for real-time status updates
4. UI Optimization: Update UI efficiently when status changes
5. Privacy: Respect user privacy settings for status visibility