aboutsummaryrefslogblamecommitdiffstats
path: root/rpc/comms/ipc_unix.go
blob: aff90cfaa0e0a6f2882b98dc98e74758adc57ebd (plain) (tree)
1
2
3
4
5
6
7
8
9
                                         
                                                
  
                                                                                  



                                                                              
                                                                             
                                                                 
                                                               


                                                                           
                                                                                  
 




                                                                    
             
            


                                                     
                                                   
                                                    







                                                                                
                                                                    









                                                                                 

 
                                                                               















                                                                                                        



                                                                                                   



                                       


                                                                             

                  
// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris

package comms

import (
    "net"
    "os"

    "github.com/ethereum/go-ethereum/logger"
    "github.com/ethereum/go-ethereum/logger/glog"
    "github.com/ethereum/go-ethereum/rpc/codec"
    "github.com/ethereum/go-ethereum/rpc/shared"
)

func newIpcClient(cfg IpcConfig, codec codec.Codec) (*ipcClient, error) {
    c, err := net.DialUnix("unix", nil, &net.UnixAddr{cfg.Endpoint, "unix"})
    if err != nil {
        return nil, err
    }

    return &ipcClient{cfg.Endpoint, c, codec, codec.New(c)}, nil
}

func (self *ipcClient) reconnect() error {
    self.coder.Close()
    c, err := net.DialUnix("unix", nil, &net.UnixAddr{self.endpoint, "unix"})
    if err == nil {
        self.coder = self.codec.New(c)
    }

    return err
}

func startIpc(cfg IpcConfig, codec codec.Codec, api shared.EthereumApi) error {
    os.Remove(cfg.Endpoint) // in case it still exists from a previous run

    l, err := net.ListenUnix("unix", &net.UnixAddr{Name: cfg.Endpoint, Net: "unix"})
    if err != nil {
        return err
    }
    os.Chmod(cfg.Endpoint, 0600)

    go func() {
        for {
            conn, err := l.AcceptUnix()
            if err != nil {
                glog.V(logger.Error).Infof("Error accepting ipc connection - %v\n", err)
                continue
            }

            id := newIpcConnId()
            glog.V(logger.Debug).Infof("New IPC connection with id %06d started\n", id)

            go handle(id, conn, api, codec)
        }

        os.Remove(cfg.Endpoint)
    }()

    glog.V(logger.Info).Infof("IPC service started (%s)\n", cfg.Endpoint)

    return nil
}