WebSocket is a web technology providing for bi-directional, full-duplex communications channels, over a single Transmission Control Protocol (TCP) socket. The WebSocket API is being standardized by the W3C, and the WebSocket protocol has been standardized by the IETF as RFC 6455.

WebSocket is designed to be implemented in web browsers and web servers, but it can be used by any client or server application. The WebSocket protocol makes possible more interaction between a browser and a web site, facilitating live content and the creation of real-time games. This is made possible by providing a standardized way for the server to send content to the browser without being solicited by the client, and allowing for messages to be passed back and forth while keeping the connection open. In this way a two-way (bi-direction) ongoing conversation can take place between a browser and the server. A similar effect has been done in non-standardized ways using stop-gap technologies such as comet.

In addition, the communications are done over the regular TCP port number 80, which is of benefit for those environments which block non-standard Internet connections using a firewall. WebSocket protocol is currently supported in several browsers including Firefox and Google Chrome. WebSocket also requires web applications on the server to be able to support it.

sgcWebSockets is a complete package providing access to WebSockets protocol, allowing to create WebSockets Servers, Intraweb Clients or WebSocket Clients in VCL, Lazarus/FPC and Firemonkey applications.

Fully functional multithreaded WebSocket server according to RFC 6455.
Supports Firemonkey (Windows, MacOS, iOS and Android).
Supports Lazarus / FreePascal.
Supports CBuilder.
Supports C# .NET through sgcWebSockets.dll
Supports Chrome, Firefox, Safari, Opera and Internet Explorer (including iPhone, iPad and iPod)
Binary and Full Unicode Messages Support
Message compression using PerMessage_Deflate extension.
Flash FallBack for Web Browsers without native WebSockets (like Internet Explorer 6-9).
Multiple Threads Support
Server component providing WebSocket and HTTP connections through the same port.
Client WebSocket supports connections through Socket.IO Servers.
Client WebSocket supports connections through HTTP Proxy Servers.
WatchDog and HeartBeat built-in support.
Events Available: OnConnect, OnDisconnect, onmessage, onerror
Built-in sub-protocols: JSON-RPC 2.0(Transactional Messages, PubSub, RPC, Queues, QoS and more), Datasets, WebRTC and WAMP.
Built-in jаvascript libraries to support browser clients.
Easy to setup
jаvascript Events for a full control
Async Events using Ajax
SSL/TLS support on Server and Client components



Home:

http://websockets.esegece.com/

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[b] Only for V.I.P

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