ipld-eth-server/pkg/rpc/ws.go
2021-08-30 21:25:39 +05:30

63 lines
1.9 KiB
Go

// VulcanizeDB
// Copyright © 2020 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package rpc
import (
"net"
"net/http"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/rpc"
"github.com/vulcanize/ipld-eth-server/pkg/prom"
)
// StartWSEndpoint starts a websocket endpoint.
func StartWSEndpoint(endpoint string, apis []rpc.API, modules []string, wsOrigins []string, exposeAll bool) (net.Listener, *rpc.Server, error) {
// All APIs registered, start the HTTP listener
var (
listener net.Listener
err error
)
// Register all the APIs exposed by the services
handler := rpc.NewServer()
err = node.RegisterApis(apis, modules, handler, exposeAll)
if err != nil {
utils.Fatalf("Could not register WS API: %w", err)
}
if listener, err = net.Listen("tcp", endpoint); err != nil {
return nil, nil, err
}
wsServer := NewWSServer(wsOrigins, handler)
wsServer.Handler = prom.WSMiddleware(wsServer.Handler)
go wsServer.Serve(listener)
return listener, handler, err
}
// NewWSServer creates a new websocket RPC server around an API provider.
//
// Deprecated: use prc.Server.WebsocketHandler
func NewWSServer(allowedOrigins []string, srv *rpc.Server) *http.Server {
return &http.Server{Handler: srv.WebsocketHandler(allowedOrigins)}
}