github.com/psiphon-labs/psiphon-tunnel-core@v2.0.28+incompatible/psiphon/common/quic/gquic-go/internal/wire/log.go (about)

     1  package wire
     2  
     3  import (
     4  	"fmt"
     5  	"strings"
     6  
     7  	"github.com/Psiphon-Labs/psiphon-tunnel-core/psiphon/common/quic/gquic-go/internal/utils"
     8  )
     9  
    10  // LogFrame logs a frame, either sent or received
    11  func LogFrame(logger utils.Logger, frame Frame, sent bool) {
    12  	if !logger.Debug() {
    13  		return
    14  	}
    15  	dir := "<-"
    16  	if sent {
    17  		dir = "->"
    18  	}
    19  	switch f := frame.(type) {
    20  	case *StreamFrame:
    21  		logger.Debugf("\t%s &wire.StreamFrame{StreamID: %d, FinBit: %t, Offset: 0x%x, Data length: 0x%x, Offset + Data length: 0x%x}", dir, f.StreamID, f.FinBit, f.Offset, f.DataLen(), f.Offset+f.DataLen())
    22  	case *StopWaitingFrame:
    23  		if sent {
    24  			logger.Debugf("\t%s &wire.StopWaitingFrame{LeastUnacked: 0x%x, PacketNumberLen: 0x%x}", dir, f.LeastUnacked, f.PacketNumberLen)
    25  		} else {
    26  			logger.Debugf("\t%s &wire.StopWaitingFrame{LeastUnacked: 0x%x}", dir, f.LeastUnacked)
    27  		}
    28  	case *AckFrame:
    29  		if len(f.AckRanges) > 1 {
    30  			ackRanges := make([]string, len(f.AckRanges))
    31  			for i, r := range f.AckRanges {
    32  				ackRanges[i] = fmt.Sprintf("{Largest: %#x, Smallest: %#x}", r.Largest, r.Smallest)
    33  			}
    34  			logger.Debugf("\t%s &wire.AckFrame{LargestAcked: %#x, LowestAcked: %#x, AckRanges: {%s}, DelayTime: %s}", dir, f.LargestAcked(), f.LowestAcked(), strings.Join(ackRanges, ", "), f.DelayTime.String())
    35  		} else {
    36  			logger.Debugf("\t%s &wire.AckFrame{LargestAcked: %#x, LowestAcked: %#x, DelayTime: %s}", dir, f.LargestAcked(), f.LowestAcked(), f.DelayTime.String())
    37  		}
    38  	default:
    39  		logger.Debugf("\t%s %#v", dir, frame)
    40  	}
    41  }