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bolucat
70 lines
2.3 KiB
Go
70 lines
2.3 KiB
Go
// Copyright (c) 2016-present Cloud <cloud@txthinking.com>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of version 3 of the GNU General Public
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// License as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package brook
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import (
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"fmt"
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)
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func EchoClient(server string, times int) error {
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c, err := DialTCP("tcp", "", server)
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if err != nil {
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return err
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}
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defer c.Close()
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var b [1024 * 2]byte
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for i := 0; i < times; i++ {
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if _, err := c.Write([]byte(c.LocalAddr().String())); err != nil {
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return err
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}
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i, err := c.Read(b[:])
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if err != nil {
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return err
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}
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if c.LocalAddr().String() == string(b[:i]) {
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fmt.Printf("TCP: src:%s -> dst:%s\n", c.LocalAddr().String(), c.RemoteAddr().String())
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fmt.Printf("TCP: dst:%s <- src:%s\n", c.LocalAddr().String(), c.RemoteAddr().String())
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}
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if c.LocalAddr().String() != string(b[:i]) {
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fmt.Printf("TCP: src:%s -> dst:proxy -> src:proxy -> dst:%s\n", c.LocalAddr().String(), c.RemoteAddr().String())
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fmt.Printf("TCP: dst:%s <- src:proxy <- dst:%s <- src:%s\n", c.LocalAddr().String(), string(b[:i]), c.RemoteAddr().String())
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}
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}
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c1, err := DialUDP("udp", "", server)
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if err != nil {
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return err
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}
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defer c1.Close()
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for i := 0; i < times; i++ {
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if _, err := c1.Write([]byte(c1.LocalAddr().String())); err != nil {
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return err
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}
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i, err := c1.Read(b[:])
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if err != nil {
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return err
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}
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if c1.LocalAddr().String() == string(b[:i]) {
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fmt.Printf("UDP: src:%s -> dst:%s\n", c1.LocalAddr().String(), c1.RemoteAddr().String())
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fmt.Printf("UDP: dst:%s <- src:%s\n", c1.LocalAddr().String(), c1.RemoteAddr().String())
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}
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if c1.LocalAddr().String() != string(b[:i]) {
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fmt.Printf("UDP: src:%s -> dst:proxy -> src:proxy -> dst:%s\n", c1.LocalAddr().String(), c1.RemoteAddr().String())
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fmt.Printf("UDP: dst:%s <- src:proxy <- dst:%s <- src:%s\n", c1.LocalAddr().String(), string(b[:i]), c1.RemoteAddr().String())
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}
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}
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return nil
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}
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