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minio/cmd/rpc-server.go

63 lines
1.7 KiB

/*
* Minio Cloud Storage, (C) 2017 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"context"
"io"
"net/http"
"net/rpc"
miniohttp "github.com/minio/minio/cmd/http"
"github.com/minio/minio/cmd/logger"
)
// ServeHTTP implements an http.Handler that answers RPC requests,
// hijacks the underlying connection and clears all deadlines if any.
func (server *rpcServer) ServeHTTP(w http.ResponseWriter, req *http.Request) {
if req.Method != http.MethodConnect {
w.WriteHeader(http.StatusMethodNotAllowed)
return
}
conn, _, err := w.(http.Hijacker).Hijack()
if err != nil {
reqInfo := (&logger.ReqInfo{}).AppendTags("remoteaddr", req.RemoteAddr)
ctx := logger.SetReqInfo(context.Background(), reqInfo)
logger.LogIf(ctx, err)
return
}
// Overrides Read/Write deadlines if any.
bufConn, ok := conn.(*miniohttp.BufConn)
if ok {
bufConn.RemoveTimeout()
conn = bufConn
}
// Can connect to RPC service using HTTP CONNECT to rpcPath.
io.WriteString(conn, "HTTP/1.0 200 Connected to Go RPC\n\n")
server.ServeConn(conn)
}
type rpcServer struct{ *rpc.Server }
// Similar to rpc.NewServer() provides a custom ServeHTTP override.
func newRPCServer() *rpcServer {
return &rpcServer{rpc.NewServer()}
}