In contrast to WebSocket and MQTT, HTTP is stateless and needs a new connection with every request (this process is very resource-intensive). HTTP is sometimes referred to as an asymmetric ‘request-and-response’ client-server protocol. Once the connection upgrade is successful https://deveducation.com/ and switches from HTTP to WebSocket, the client and server can freely exchange messages over the connection as and when needed. After the WebSocket connection has served its purpose, it can be terminated via a closing handshake (both the client and server can initiate it).
- Communication protocols are a set of rules for communication purposes.
- TCP uses a three-way handshake method to create a connection between the client and the server.
- It is used in the implementation of web services in computer-based networks.
- HTTP follows the request-response model and is mainly used to retrieve static resources like web pages or make stateless API requests.
- Once the communication link establishment and the connection are opened, message exchange will take place in bidirectional mode until connection persists between client-server.
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What do WebSocket messages look like?
Being a full-duplex bidirectional protocol means that both the client and the server can push messages in both directions independently and without any linking to a previous request. Once the connection is established, the client and the server can communicate via the same TCP connection throughout the entire communication cycle. Another limitation of the HTTP protocol is that only one HTTP request can be sent over a single HTTP connection. To circumvent this restriction, the HTTP streaming method was developed. It allows the server to send a response of an unspecified length per one HTTP connection.
The way in which socket works is slightly different from how HTTP works, the status code 101 denotes the switching protocol in WebSocket. Ably is a realtime platform designed for last-mile pub/sub messaging. We make it easy for developers to build realtime experiences like chat, live dashboards, and asset tracking for millions of users, without the hassle of managing and scaling infrastructure.
Web Socket vs HTTP
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