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103 lines
2.2 KiB
Go
103 lines
2.2 KiB
Go
package tcping
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import (
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"fmt"
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"net"
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"time"
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)
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// TCPing ...
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type TCPing struct {
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target *Target
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done chan struct{}
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result *Result
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}
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var _ Pinger = (*TCPing)(nil)
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// NewTCPing return a new TCPing
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func NewTCPing() *TCPing {
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tcping := TCPing{
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done: make(chan struct{}),
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}
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return &tcping
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}
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// SetTarget set target for TCPing
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func (tcping *TCPing) SetTarget(target *Target) {
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tcping.target = target
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if tcping.result == nil {
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tcping.result = &Result{Target: target}
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}
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}
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// Result return the result
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func (tcping TCPing) Result() *Result {
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return tcping.result
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}
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// Start a tcping
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func (tcping TCPing) Start() <-chan struct{} {
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go func() {
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t := time.NewTicker(tcping.target.Interval)
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defer t.Stop()
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for {
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select {
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case <-t.C:
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if tcping.result.Counter >= tcping.target.Counter && tcping.target.Counter != 0 {
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tcping.Stop()
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return
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}
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duration, remoteAddr, err := tcping.ping()
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tcping.result.Counter++
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if err != nil {
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fmt.Printf("Ping %s - failed: %s\n", tcping.target, err)
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} else {
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fmt.Printf("Ping %s(%s) - Connected - time=%s\n", tcping.target, remoteAddr, duration)
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if tcping.result.MinDuration == 0 {
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tcping.result.MinDuration = duration
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}
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if tcping.result.MaxDuration == 0 {
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tcping.result.MaxDuration = duration
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}
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tcping.result.SuccessCounter++
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if duration > tcping.result.MaxDuration {
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tcping.result.MaxDuration = duration
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} else if duration < tcping.result.MinDuration {
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tcping.result.MinDuration = duration
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}
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tcping.result.TotalDuration += duration
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}
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case <-tcping.done:
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return
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}
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}
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}()
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return tcping.done
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}
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// Stop the tcping
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func (tcping *TCPing) Stop() {
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tcping.done <- struct{}{}
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}
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func (tcping TCPing) ping() (time.Duration, net.Addr, error) {
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var remoteAddr net.Addr
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duration, errIfce := timeIt(func() interface{} {
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conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", tcping.target.Host, tcping.target.Port), tcping.target.Timeout)
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if err != nil {
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return err
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}
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remoteAddr = conn.RemoteAddr()
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conn.Close()
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return nil
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})
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if errIfce != nil {
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err := errIfce.(error)
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return 0, remoteAddr, err
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}
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return time.Duration(duration), remoteAddr, nil
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}
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