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github.com/tmc/grpc-websocket-proxy
Wrap your grpc-gateway mux with this helper to expose streaming endpoints over websockets.
On the wire this uses newline-delimited json encoding of the messages.
Usage:
mux := runtime.NewServeMux()
opts := []grpc.DialOption{grpc.WithInsecure()}
if err := echoserver.RegisterEchoServiceHandlerFromEndpoint(ctx, mux, *grpcAddr, opts); err != nil {
return err
}
- http.ListenAndServe(*httpAddr, mux)
+ http.ListenAndServe(*httpAddr, wsproxy.WebsocketProxy(mux))
import "github.com/tmc/grpc-websocket-proxy/wsproxy"
Package wsproxy implements a websocket proxy for grpc-gateway backed services
var (
MethodOverrideParam = "method"
TokenCookieName = "token"
)
func WebsocketProxy(h http.Handler) http.HandlerFunc
WebsocketProxy attempts to expose the underlying handler as a bidi websocket stream with newline-delimited JSON as the content encoding.
The HTTP Authorization header is either populated from the Sec-Websocket-Protocol field or by a cookie. The cookie name is specified by the TokenCookieName value.
example:
Sec-Websocket-Protocol: Bearer, foobar
is converted to:
Authorization: Bearer foobar
Method can be overwritten with the MethodOverrideParam get parameter in the requested URL
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