WebSockets

  1. Client-Side WebSocket API (JavaScript)
    1. Creating a WebSocket Instance
      1. Constructor Syntax and Parameters
        1. Specifying WebSocket URL
          1. Specifying Subprotocols
          2. Connection States
            1. CONNECTING State
              1. OPEN State
                1. CLOSING State
                  1. CLOSED State
                    1. ReadyState Property
                    2. WebSocket Events
                      1. onopen Event
                        1. Connection Established Handler
                        2. onmessage Event
                          1. Receiving Data Handler
                            1. Handling Text Messages
                              1. Handling Binary Messages
                              2. onerror Event
                                1. Error Event Structure
                                  1. Common Error Scenarios
                                  2. onclose Event
                                    1. Connection Terminated Handler
                                      1. Close Event Structure
                                        1. Detecting Close Reasons
                                      2. Sending Data
                                        1. The send() Method
                                          1. Method Syntax and Usage
                                          2. Sending Text Data
                                            1. String Data
                                              1. JSON Serialization
                                              2. Sending Binary Data
                                                1. ArrayBuffer
                                                  1. Blob
                                                    1. Typed Arrays
                                                  2. Closing the Connection
                                                    1. The close() Method
                                                      1. Method Syntax and Parameters
                                                      2. Status Codes and Reason Strings
                                                        1. Standard Close Codes
                                                          1. Custom Close Reasons
                                                        2. Client-Side Best Practices
                                                          1. Handling Connection Failures
                                                            1. Detecting Connection Failures
                                                              1. Responding to Connection Failures
                                                              2. Implementing Automatic Reconnection Logic
                                                                1. Reconnection Strategies
                                                                  1. Handling Reconnection Delays
                                                                  2. Exponential Backoff Strategy
                                                                    1. Algorithm Overview
                                                                      1. Implementation Considerations
                                                                      2. Managing Message Queues During Reconnection
                                                                        1. Handling Browser Compatibility

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                                                                      3. The WebSocket Protocol (RFC 6455)

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                                                                      5. Server-Side Implementation