ooni-probe-cli/internal/engine/netx/dialer/emitter.go
Simone Basso d57c78bc71
chore: merge probe-engine into probe-cli (#201)
This is how I did it:

1. `git clone https://github.com/ooni/probe-engine internal/engine`

2. ```
(cd internal/engine && git describe --tags)
v0.23.0
```

3. `nvim go.mod` (merging `go.mod` with `internal/engine/go.mod`

4. `rm -rf internal/.git internal/engine/go.{mod,sum}`

5. `git add internal/engine`

6. `find . -type f -name \*.go -exec sed -i 's@/ooni/probe-engine@/ooni/probe-cli/v3/internal/engine@g' {} \;`

7. `go build ./...` (passes)

8. `go test -race ./...` (temporary failure on RiseupVPN)

9. `go mod tidy`

10. this commit message

Once this piece of work is done, we can build a new version of `ooniprobe` that
is using `internal/engine` directly. We need to do more work to ensure all the
other functionality in `probe-engine` (e.g. making mobile packages) are still WAI.

Part of https://github.com/ooni/probe/issues/1335
2021-02-02 12:05:47 +01:00

104 lines
2.7 KiB
Go

package dialer
import (
"context"
"net"
"time"
"github.com/ooni/probe-cli/v3/internal/engine/legacy/netx/dialid"
"github.com/ooni/probe-cli/v3/internal/engine/legacy/netx/modelx"
"github.com/ooni/probe-cli/v3/internal/engine/legacy/netx/transactionid"
)
// EmitterDialer is a Dialer that emits events
type EmitterDialer struct {
Dialer
}
// DialContext implements Dialer.DialContext
func (d EmitterDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
start := time.Now()
conn, err := d.Dialer.DialContext(ctx, network, address)
stop := time.Now()
root := modelx.ContextMeasurementRootOrDefault(ctx)
root.Handler.OnMeasurement(modelx.Measurement{
Connect: &modelx.ConnectEvent{
ConnID: safeConnID(network, conn),
DialID: dialid.ContextDialID(ctx),
DurationSinceBeginning: stop.Sub(root.Beginning),
Error: err,
Network: network,
RemoteAddress: address,
SyscallDuration: stop.Sub(start),
TransactionID: transactionid.ContextTransactionID(ctx),
},
})
if err != nil {
return nil, err
}
return EmitterConn{
Conn: conn,
Beginning: root.Beginning,
Handler: root.Handler,
ID: safeConnID(network, conn),
}, nil
}
// EmitterConn is a net.Conn used to emit events
type EmitterConn struct {
net.Conn
Beginning time.Time
Handler modelx.Handler
ID int64
}
// Read implements net.Conn.Read
func (c EmitterConn) Read(b []byte) (n int, err error) {
start := time.Now()
n, err = c.Conn.Read(b)
stop := time.Now()
c.Handler.OnMeasurement(modelx.Measurement{
Read: &modelx.ReadEvent{
ConnID: c.ID,
DurationSinceBeginning: stop.Sub(c.Beginning),
Error: err,
NumBytes: int64(n),
SyscallDuration: stop.Sub(start),
},
})
return
}
// Write implements net.Conn.Write
func (c EmitterConn) Write(b []byte) (n int, err error) {
start := time.Now()
n, err = c.Conn.Write(b)
stop := time.Now()
c.Handler.OnMeasurement(modelx.Measurement{
Write: &modelx.WriteEvent{
ConnID: c.ID,
DurationSinceBeginning: stop.Sub(c.Beginning),
Error: err,
NumBytes: int64(n),
SyscallDuration: stop.Sub(start),
},
})
return
}
// Close implements net.Conn.Close
func (c EmitterConn) Close() (err error) {
start := time.Now()
err = c.Conn.Close()
stop := time.Now()
c.Handler.OnMeasurement(modelx.Measurement{
Close: &modelx.CloseEvent{
ConnID: c.ID,
DurationSinceBeginning: stop.Sub(c.Beginning),
Error: err,
SyscallDuration: stop.Sub(start),
},
})
return
}