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api:websocket:connecting [2025/03/04 02:51] – chad | api:websocket:connecting [2025/03/14 02:53] (current) – removed chad | ||
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- | ====== Connecting and Authenticating ====== | ||
- | |||
- | To start using the **Plus500 Futures Technologies WebSocket API**, clients must establish a secure WebSocket connection and authenticate before subscribing to data streams or submitting orders. | ||
- | |||
- | ===== WebSocket Connection ===== | ||
- | |||
- | ^ Environment ^ WebSocket URL ^ | ||
- | | **Live** | [[wss:// | ||
- | | **Simulator** | [[wss:// | ||
- | |||
- | ✅ **Connection Requirements: | ||
- | * **Protocol**: | ||
- | * **Port**: 443 (Default for WSS) | ||
- | * **Message Format**: Google Protocol Buffers (Protobuf) | ||
- | * **Keep-Alive Mechanism**: | ||
- | - The server **sends a message every 20 seconds**. | ||
- | - If no other message is sent during that interval, a **heartbeat** will be sent. | ||
- | - The **client must also send a heartbeat every 20 seconds**. | ||
- | - If **no message is received for 3 heartbeat intervals**, | ||
- | |||
- | ===== Authentication ===== | ||
- | After establishing a WebSocket connection, the **first message** a client must send is a `LoginRequest` message. This message supports **two authentication methods**: | ||
- | |||
- | * **API Key Authentication** – Only requires the `api_key` field. | ||
- | * **Username/ | ||
- | |||
- | Example authentication request (`LoginRequest` in Protobuf format): | ||
- | |||
- | < | ||
- | message LoginRequest { | ||
- | string api_key = 1; // API Key authentication (optional) | ||
- | |||
- | string firm = 2; // Firm ID (required for username/ | ||
- | string username = 3; // Username | ||
- | string password = 4; // Password | ||
- | string app_name = 5; // Application name | ||
- | string app_license = 6; // Application license key | ||
- | } | ||
- | </ | ||
- | |||
- | Example authentication response (`LoginResponse` in Protobuf format): | ||
- | |||
- | < | ||
- | message LoginResponse { | ||
- | T4Proto.Common.LoginResult result = 1; // Authentication result | ||
- | string session_id = 2; // Session identifier | ||
- | string user_id = 3; // Authenticated user ID | ||
- | string firm_id = 4; // Firm ID | ||
- | repeated string roles = 5; // Assigned user roles | ||
- | string error_message = 6; // Error details (if applicable) | ||
- | } | ||
- | </ | ||
- | |||
- | If authentication fails, the server will return an error message with one of the following `LoginResult` codes: | ||
- | |||
- | ^ LoginResult Code ^ Meaning ^ | ||
- | | `LOGIN_SUCCESS` | Login successful. | | ||
- | | `LOGIN_FAILED` | Login failed. Check credentials. | | ||
- | | `TWO_FACTOR_REQUIRED` | Two-factor authentication required. | | ||
- | | `UNAUTHORIZED` | The provided API key or credentials are not valid. | | ||
- | | `PASSWORD_EXPIRED` | The password must be changed before login. | | ||
- | | `LOCKED_OUT` | Too many failed login attempts. | | ||
- | |||
- | ===== Reconnection & Session Handling ===== | ||
- | If the connection is lost, clients should implement a **reconnection strategy**: | ||
- | |||
- | * **Auto-reconnect**: | ||
- | * **No session resume**: Clients must re-authenticate after reconnecting. | ||
- | * **System maintenance**: | ||
- | - **The system shuts down every Friday at midnight** for maintenance. | ||
- | - **Service resumes on Sunday morning**. | ||
- | |||
- | ===== Next Steps ===== | ||
- | Once authenticated, | ||
- | * Subscribe to **market data streams** ([[quote_data|Quote Data]]). | ||
- | * Retrieve **account and position details** ([[account_data|Account Data]]). | ||
- | * Submit **orders and manage trades** ([[order_submission|Order Submission]]). | ||
- | |||
- | ---- | ||
- | |||
- | 💡 **Tip:** Test your WebSocket connection using tools like `wscat` or a sample SDK. | ||