WebSockets

wikipedia:WebSocket (2011) is a computer communications protocol, providing full-duplex communication channels over a single TCP connection. The WebSocket protocol defines a ws:// and wss:// prefix to indicate a WebSocket and a WebSocket Secure connection, respectively.

• https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Writing_WebSocket_client_applications

The URL to which to connect; this should be the URL to which the WebSocket server will respond. This should use the URL scheme wss://, although some software may allow you to use the insecure ws:// for local connections.

Web Server implementation

• Amazon ELB support WebSockets and HTTP/2 since 2016
• Nginx supports WebSockets since 2013, implemented in version 1.3.13 including acting as a reverse proxy and load balancer of WebSocket applications.

Related terms

• AWS API Gateway
• WS-RPC
• HTTP/3
• Server-Sent Events (SSE)
• Load testing: Gatling (software)
• nats.ws

curl: (1) Protocol "wss" not supported or disabled in libcurl
socket.io-client
websocket handshake error: invalid value for header 'Upgrade'

See also

• WebSocket, WS-RPC, wscat, websocat, ws, wss, nats.ws, import websockets
• HTTP, HTTP client, HTTP/1.1, HTTP/2, HTTP/3, HTTPS, HSTS CSR, TLS, SSL, openSSL, WebSockets, WebRTC, ssl_certificate QUIC, HPKP, CT, List of HTTP status codes, URL redirection, Content-type:, Webhook, HTTP headers, --insecure, Axios HTTP client, HTTP cookies, HTTP ETag, Hypertext Transfer Protocol -- HTTP/1.1

https://aws.amazon.com/blogs/aws/new-aws-application-load-balancer/

http://nginx.org/en/CHANGES

https://www.nginx.com/blog/websocket-nginx/