|
http://www.asp.net/vnext/whats-new Support for WebSockets Protocol WebSockets protocol is a standards-based network protocol that defines how to establish secure, real-time bidirectional communications between a client and a server over HTTP. Microsoft has worked with both the IETF and W3C standards bodies to help define the protocol. The WebSockets protocol is supported by any client (not just browsers), with Microsoft investing substantial resources supporting WebSockets protocol on both client and mobile operating systems. WebSockets protocol makes it much easier to create long-running data transfers between a client and a server. For example, writing a chat application is much easier because you can establish a real long-running connection between a client and a server. You do not have to resort to workarounds like periodic polling or HTTP long-polling to simulate the behavior of a socket. ASP.NET 4.5 and IIS 8 include low-level WebSockets support, enabling ASP.NET developers to use managed APIs for asynchronously reading and writing both string and binary data on a WebSockets object. For ASP.NET 4.5, there is a new System.Web.WebSockets namespace that contains types for working with WebSockets protocol. A browser client establishes a WebSockets connection by creating a DOM WebSocket object that points to a URL in an ASP.NET application, as in the following example: 新加了好多Async的支持，这个乱码应该喜欢的 websocket 是个里程碑（对MS solution 而言），以后网页的开发模式又得改改了，不再一味地依赖http了, |
