ooni-probe-cli/internal/engine/netx/quicdialer/system.go
Simone Basso 566c6b246a
cleanup: remove unnecessary legacy interfaces (#656)
This diff addresses another point of https://github.com/ooni/probe/issues/1956:

> - [ ] observe that we're still using a bunch of private interfaces for common interfaces such as the `Dialer`, so we can get rid of these private interfaces and always use the ones in `model`, which allows us to remove a bunch of legacy wrappers

Additional cleanups may still be possible. The more I cleanup, the more I see
there's extra legacy code we can dispose of (which seems good?).
2022-01-07 18:33:37 +01:00

82 lines
1.7 KiB
Go

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