Web sockets
Download as PPTX, PDF0 likes381 views
This document summarizes the WebSocket protocol specifications for establishing a WebSocket connection between a client and server, including the handshake process and frame format for sending messages. It also provides an example of an incoming message stream class that can unmask payloads according to the WebSocket specifications.
1 of 10
Download to read offline
![Frame II
Length
7 Bit
Length I
< 0x7e
Length II
= 0x7e
Length III
= 0x7f
Masked
for (var i = 0; i < b.length; i++) {
b[i] = b[i] ^ m[i % 4]
}](https://image.slidesharecdn.com/websockets-151210201643/85/Web-sockets-7-320.jpg)
More Related Content
What's hot (20)
Ad
Similar to Web sockets (20)
Ad
Recently uploaded (20)
Web sockets
- 2. Preface
- 4. Upgrade I Request Response HTTP/1.1 101 Switching Protocols Upgrade: websocket Connection: Upgrade Sec-WebSocket-Accept <accept> Sec-WebSocket-Protocol: <prot1> GET /<endpoint> HTTP 1.1 Host: example.org Upgrade: websocket Connection: Upgrade Origin: example.org Sec-WebSocket-Accept <key> Sec-WebSocket-Version: 13 Sec-WebSocket-Protocol: <prot1>
- 6. Frame I Head Payload RSV, Opcode 1 Byte Masked, Length I 1 Byte Length II 2 Byte Masking 4 Byte Length III 8 Byte Opcodes: Continuation (0x00), Text (0x01), Binary (0x02), Close (0x08), Ping (0x09), Pong (0x0a)
- 7. Frame II Length 7 Bit Length I < 0x7e Length II = 0x7e Length III = 0x7f Masked for (var i = 0; i < b.length; i++) { b[i] = b[i] ^ m[i % 4] }
- 8. Streams function Incoming() { Transform.call(this) } Inherits(Incoming, Transform) Transform.prototype._read = function(chunk, encoding, callback) { if (!this.header) { // parse head } if (this.header.masked) { // unmask payload } callback(null, chunk) }
- 9. Experience
- 10. Thank You Bodo Kaiser <i@bodokaiser.io>