What is WebSocket host?
A WebSocket server is nothing more than an application listening on any port of a TCP server that follows a specific protocol. A WebSocket server can be written in any server-side programming language that is capable of Berkeley sockets, such as C(++), Python, PHP, or server-side JavaScript.
How does a WebSocket server work?
WebSocket uses HTTP as the initial transport mechanism, but keeps the TCP connection alive after the HTTP response is received so that it can be used for sending messages between client and server. WebSockets allow us to build “real-time” applications without the use of long-polling.
How many open connections can a server have?
On the TCP level the tuple (source ip, source port, destination ip, destination port) must be unique for each simultaneous connection. That means a single client cannot open more than 65535 simultaneous connections to a single server. But a server can (theoretically) serve 65535 simultaneous connections per client.
Why do we need WebSocket communication between servers?
Its easy to let server B do a http request for data, but what I really want, is that server B gets a ‘socket update’ from server A, whenever it has updated the database data. The problem: is that server B is not always on the same URL…. So the database server cannot simply do a get/post request, cause it will not always know its url.
Why is the Sec WebSocket Accept header important?
The Sec-WebSocket-Accept header is important in that the server must derive it from the Sec-WebSocket-Key that the client sent to it.
How is WebSocket different from RESTful Web Services?
Note: RESTful web services are sufficient to get the data from the server if we are loading the data only once. WebSocket is a bidirectional communication protocol that can send the data from the client to the server or from the server to the client by reusing the established connection channel.
How to set up WebSocket in Microsoft Office?
Select the installation type and click Next. Select the destination server and click Next. On the Server Roles page, expand Web Server (IIS), expand Web Server, expand Application Development, and then select WebSocket Protocol. Click Next.