88 lines
1.9 KiB
Go
88 lines
1.9 KiB
Go
package quicdialer
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import (
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"net"
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"time"
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"github.com/ooni/probe-cli/v3/internal/engine/netx/trace"
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"github.com/ooni/probe-cli/v3/internal/errorsx"
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"github.com/ooni/probe-cli/v3/internal/quicx"
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)
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// QUICListener listens for QUIC connections.
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type QUICListener interface {
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// Listen creates a new listening UDPConn.
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Listen(addr *net.UDPAddr) (quicx.UDPLikeConn, error)
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}
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// QUICListenerSaver is a QUICListener that also implements saving events.
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type QUICListenerSaver struct {
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// QUICListener is the underlying QUICListener.
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QUICListener QUICListener
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// Saver is the underlying Saver.
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Saver *trace.Saver
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}
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// Listen implements QUICListener.Listen.
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func (qls *QUICListenerSaver) Listen(addr *net.UDPAddr) (quicx.UDPLikeConn, error) {
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pconn, err := qls.QUICListener.Listen(addr)
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if err != nil {
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return nil, err
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}
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return &saverUDPConn{
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UDPLikeConn: pconn,
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saver: qls.Saver,
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}, nil
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}
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type saverUDPConn struct {
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quicx.UDPLikeConn
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saver *trace.Saver
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}
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var _ quicx.UDPLikeConn = &saverUDPConn{}
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func (c *saverUDPConn) WriteTo(p []byte, addr net.Addr) (int, error) {
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start := time.Now()
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count, err := c.UDPLikeConn.WriteTo(p, addr)
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stop := time.Now()
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c.saver.Write(trace.Event{
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Address: addr.String(),
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Data: p[:count],
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Duration: stop.Sub(start),
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Err: err,
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NumBytes: count,
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Name: errorsx.WriteToOperation,
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Time: stop,
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})
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return count, err
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}
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func (c *saverUDPConn) ReadFrom(b []byte) (int, net.Addr, error) {
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start := time.Now()
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n, addr, err := c.UDPLikeConn.ReadFrom(b)
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stop := time.Now()
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var data []byte
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if n > 0 {
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data = b[:n]
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}
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c.saver.Write(trace.Event{
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Address: c.safeAddrString(addr),
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Data: data,
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Duration: stop.Sub(start),
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Err: err,
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NumBytes: n,
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Name: errorsx.ReadFromOperation,
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Time: stop,
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})
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return n, addr, err
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}
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func (c *saverUDPConn) safeAddrString(addr net.Addr) (out string) {
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if addr != nil {
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out = addr.String()
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}
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return
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}
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