SSE (EventSource), with bidirectional emulation

SSE (EventSource) connection endpoint in Centrifugo is:

/connection/sse

info

This transport is only implemented by our Javascript SDK at this point – as it mostly makes sense as a fallback for WebSocket to have real-time connection in an environment where WebSocket is unavailable. These days those envs are mostly corporate networks which can block WebSocket traffic (even TLS-based).

Options

sse

Boolean, default: false.

Enables SSE (EventSource) endpoint. And enables emulation endpoint (/emulation by default) to accept emulation HTTP requests from clients.

config.json

{
    ...
    "sse": true
}

sse_max_request_body_size

Default: 65536 (64KB)

Maximum allowed size of a initial HTTP POST request in bytes when using HTTP POST requests to connect (browsers are using GET so it's not applied).