67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
// Copyright 2018 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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package rpc
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import (
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"context"
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"errors"
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"io"
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"net"
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"os"
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"time"
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)
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// DialStdIO creates a client on stdin/stdout.
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func DialStdIO(ctx context.Context) (*Client, error) {
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return DialIO(ctx, os.Stdin, os.Stdout)
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}
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// DialIO creates a client which uses the given IO channels
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func DialIO(ctx context.Context, in io.Reader, out io.Writer) (*Client, error) {
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return newClient(ctx, func(_ context.Context) (ServerCodec, error) {
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return NewJSONCodec(stdioConn{
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in: in,
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out: out,
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}), nil
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})
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}
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type stdioConn struct {
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in io.Reader
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out io.Writer
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}
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func (io stdioConn) Read(b []byte) (n int, err error) {
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return io.in.Read(b)
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}
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func (io stdioConn) Write(b []byte) (n int, err error) {
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return io.out.Write(b)
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}
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func (io stdioConn) Close() error {
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return nil
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}
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func (io stdioConn) RemoteAddr() string {
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return "/dev/stdin"
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}
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func (io stdioConn) SetWriteDeadline(t time.Time) error {
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return &net.OpError{Op: "set", Net: "stdio", Source: nil, Addr: nil, Err: errors.New("deadline not supported")}
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}
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