mirror of https://github.com/ethereum/go-ethereum
rpc: fix client shutdown hang when Close races with Unsubscribe (#17894)
Fixes #17837pull/17912/merge
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// 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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"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 newClient(ctx, func(_ context.Context) (net.Conn, error) { |
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return stdioConn{}, nil |
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}) |
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} |
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type stdioConn struct{} |
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func (io stdioConn) Read(b []byte) (n int, err error) { |
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return os.Stdin.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 os.Stdout.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) LocalAddr() net.Addr { |
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return &net.UnixAddr{Name: "stdio", Net: "stdio"} |
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} |
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func (io stdioConn) RemoteAddr() net.Addr { |
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return &net.UnixAddr{Name: "stdio", Net: "stdio"} |
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} |
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func (io stdioConn) SetDeadline(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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func (io stdioConn) SetReadDeadline(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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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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