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It consists of two components: a client, and a server. Both components have a nearly identical API. Socket.IO is also a protocol, [4] where different complying implementations of the protocol can communicate with each other. The main implementation consists of two parts: a client that runs in the browser and a server for Node.js.
Client-languages: JavaScript, .NET, Mono. Yes Yes Yes Yes No Yes Yes Yes Yes Yes memory-limited, configurable RIWA Gateway [18] Yes Yes 2.01 RFC 6455 Commercial Java:
Client-side terminal emulation transmits the raw terminal output from the SSH server directly to the client, which has the advantage of offloading the process of translating terminal output into HTML onto the client. However, it can be limited by the capabilities of JavaScript and can use a significant amount of the client's CPU and memory.
The client sends an HTTP request (method GET, version ≥ 1.1) and the server returns an HTTP response with status code 101 (Switching Protocols) on success.This means a WebSocket server can use the same port as HTTP (80) and HTTPS (443) because the handshake is compatible with HTTP.
Programming a TCP client application involves the following steps: Creating a TCP socket. Connecting to the server ( connect() ), by passing a sockaddr_in structure with the sin_family set to AF_INET , sin_port set to the port the endpoint is listening (in network byte order), and sin_addr set to the IP address of the listening server (also in ...
SignalR takes advantage of several transports, automatically selecting the best available transport given the client's and server's capabilities. SignalR takes advantage of WebSocket, an HTML5 API that enables bi-directional communication between the browser and server. SignalR will use WebSockets under the covers when it's available, and ...
register: a client exposes a procedure to be called remotely. call: a client asks the router to get the result of an exposed procedure from another client. subscribe: a client notifies its interest in a topic. publish: a client publishes information about this topic. This can have subtle variations depending on the underlying transport. [11]
The introduction says one thing, the Disadvantages sections says another. There are various Socket.IO client libraries for other languages, so I guess Socket.IO is both the "reference" JavaScript implementation and the "custom realtime that this library implements on top of other realtime protocols."