added RPC/IPC support

1 files changed, 77 insertions, 0 deletions

diff --git a/rpc/comms/ipc_unix.go b/rpc/comms/ipc_unix.go
new file mode 100644
index 000000000..bb09d9547
--- /dev/null
+++ b/rpc/comms/ipc_unix.go
@@ -0,0 +1,77 @@
+// +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
+}