github.com/codingfuture/orig-energi3@v0.8.4/rpc/ipc_windows.go (about)

     1  // Copyright 2015 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // +build windows
    18  
    19  package rpc
    20  
    21  import (
    22  	"context"
    23  	"net"
    24  	"time"
    25  
    26  	"gopkg.in/natefinch/npipe.v2"
    27  )
    28  
    29  // This is used if the dialing context has no deadline. It is much smaller than the
    30  // defaultDialTimeout because named pipes are local and there is no need to wait so long.
    31  const defaultPipeDialTimeout = 2 * time.Second
    32  
    33  // ipcListen will create a named pipe on the given endpoint.
    34  func ipcListen(endpoint string) (net.Listener, error) {
    35  	return npipe.Listen(endpoint)
    36  }
    37  
    38  // newIPCConnection will connect to a named pipe with the given endpoint as name.
    39  func newIPCConnection(ctx context.Context, endpoint string) (net.Conn, error) {
    40  	timeout := defaultPipeDialTimeout
    41  	if deadline, ok := ctx.Deadline(); ok {
    42  		timeout = deadline.Sub(time.Now())
    43  		if timeout < 0 {
    44  			timeout = 0
    45  		}
    46  	}
    47  	return npipe.DialTimeout(endpoint, timeout)
    48  }