113 lines
3.0 KiB
Go
113 lines
3.0 KiB
Go
// Copyright 2015 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
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package comms
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import (
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"net"
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"os"
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"path/filepath"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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"github.com/ethereum/go-ethereum/rpc/codec"
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"github.com/ethereum/go-ethereum/rpc/shared"
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"github.com/ethereum/go-ethereum/rpc/useragent"
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)
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func newIpcClient(cfg IpcConfig, codec codec.Codec) (*ipcClient, error) {
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c, err := net.DialUnix("unix", nil, &net.UnixAddr{cfg.Endpoint, "unix"})
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if err != nil {
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return nil, err
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}
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coder := codec.New(c)
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msg := shared.Request{
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Id: 0,
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Method: useragent.EnableUserAgentMethod,
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Jsonrpc: shared.JsonRpcVersion,
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Params: []byte("[]"),
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}
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coder.WriteResponse(msg)
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coder.Recv()
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return &ipcClient{cfg.Endpoint, c, codec, coder}, nil
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}
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func (self *ipcClient) reconnect() error {
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self.coder.Close()
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c, err := net.DialUnix("unix", nil, &net.UnixAddr{self.endpoint, "unix"})
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if err == nil {
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self.coder = self.codec.New(c)
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msg := shared.Request{
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Id: 0,
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Method: useragent.EnableUserAgentMethod,
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Jsonrpc: shared.JsonRpcVersion,
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Params: []byte("[]"),
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}
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self.coder.WriteResponse(msg)
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self.coder.Recv()
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}
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return err
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}
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func startIpc(cfg IpcConfig, codec codec.Codec, initializer func(conn net.Conn) (shared.EthereumApi, error)) error {
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// Ensure the IPC path exists and remove any previous leftover
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if err := os.MkdirAll(filepath.Dir(cfg.Endpoint), 0751); err != nil {
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return err
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}
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os.Remove(cfg.Endpoint)
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l, err := net.ListenUnix("unix", &net.UnixAddr{Name: cfg.Endpoint, Net: "unix"})
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if err != nil {
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return err
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}
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os.Chmod(cfg.Endpoint, 0600)
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go func() {
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for {
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conn, err := l.AcceptUnix()
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if err != nil {
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glog.V(logger.Error).Infof("Error accepting ipc connection - %v\n", err)
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continue
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}
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id := newIpcConnId()
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glog.V(logger.Debug).Infof("New IPC connection with id %06d started\n", id)
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api, err := initializer(conn)
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if err != nil {
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glog.V(logger.Error).Infof("Unable to initialize IPC connection - %v\n", err)
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conn.Close()
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continue
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}
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go handle(id, conn, api, codec)
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}
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os.Remove(cfg.Endpoint)
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}()
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glog.V(logger.Info).Infof("IPC service started (%s)\n", cfg.Endpoint)
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return nil
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}
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