github.com/gochain-io/gochain@v2.2.26+incompatible/rpc/ipc_unix.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 darwin dragonfly freebsd linux nacl netbsd openbsd solaris
    18  
    19  package rpc
    20  
    21  import (
    22  	"context"
    23  	"net"
    24  	"os"
    25  	"path/filepath"
    26  
    27  	"github.com/gochain-io/gochain/log"
    28  )
    29  
    30  // ipcListen will create a Unix socket on the given endpoint.
    31  func ipcListen(endpoint string) (net.Listener, error) {
    32  	// Ensure the IPC path exists and remove any previous leftover
    33  	if err := os.MkdirAll(filepath.Dir(endpoint), 0751); err != nil {
    34  		return nil, err
    35  	}
    36  	if err := os.Remove(endpoint); err != nil && !os.IsNotExist(err) {
    37  		log.Error("Cannot remove ipc endpoint", "err", err)
    38  	}
    39  	l, err := net.Listen("unix", endpoint)
    40  	if err != nil {
    41  		return nil, err
    42  	}
    43  	if err := os.Chmod(endpoint, 0600); err != nil {
    44  		log.Error("Cannot chmod ipc endpoint", "err", err)
    45  	}
    46  	return l, nil
    47  }
    48  
    49  // newIPCConnection will connect to a Unix socket on the given endpoint.
    50  func newIPCConnection(ctx context.Context, endpoint string) (net.Conn, error) {
    51  	return dialContext(ctx, "unix", endpoint)
    52  }