aboutsummaryrefslogtreecommitdiffstats
path: root/rpc/comms/ipc_unix.go
blob: bb09d95475dfa8eb486ba3b7f633f712c5b73fa8 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris

package comms

import (
    "io"
    "net"
    "os"

    "github.com/ethereum/go-ethereum/logger"
    "github.com/ethereum/go-ethereum/logger/glog"
    "github.com/ethereum/go-ethereum/rpc/api"
    "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{codec.New(c)}, nil
}

func startIpc(cfg IpcConfig, codec codec.Codec, api api.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
            }

            go func(conn net.Conn) {
                codec := codec.New(conn)

                for {
                    req, err := codec.ReadRequest()
                    if err == io.EOF {
                        codec.Close()
                        return
                    } else if err != nil {
                        glog.V(logger.Error).Infof("IPC recv err - %v\n", err)
                        codec.Close()
                        return
                    }

                    var rpcResponse interface{}
                    res, err := api.Execute(req)

                    rpcResponse = shared.NewRpcResponse(req.Id, req.Jsonrpc, res, err)
                    err = codec.WriteResponse(rpcResponse)
                    if err != nil {
                        glog.V(logger.Error).Infof("IPC send err - %v\n", err)
                        codec.Close()
                        return
                    }
                }
            }(conn)
        }

        os.Remove(cfg.Endpoint)
    }()
    
    glog.V(logger.Info).Infof("IPC service started (%s)\n", cfg.Endpoint)
    
    return nil
}