[lwip-devel] [bug #59639] #define TCP_OVERSIZE 0 causes continuous retransmissions

[Oleg Kobrin]

URL:
  <https://savannah.nongnu.org/bugs/?59639>

                 Summary: #define TCP_OVERSIZE 0 causes continuous
retransmissions
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: kiabrin
            Submitted on: Вт 08 дек 2020 08:40:00
                Category: TCP
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

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Details:

No.     Time    Source  Destination     Protocol        Length  Info
2305    65.878862       172.23.3.32     172.23.3.85     TCP     66      17509 → 
8070 [SYN] Seq=0
Win=8192 Len=0 MSS=1460 WS=256 SACK_PERM=1
2306    65.879085       172.23.3.85     172.23.3.32     TCP     60      8070 → 
17509 [SYN, ACK] Seq=0
Ack=1 Win=4096 Len=0 MSS=1460
2307    65.879162       172.23.3.32     172.23.3.85     TCP     54      17509 → 
8070 [ACK] Seq=1 Ack=1
Win=64240 Len=0
2319    66.388327       172.23.3.32     172.23.3.85     TCP     66      17509 → 
8070 [PSH, ACK] Seq=1
Ack=1 Win=64240 Len=12
2326    66.688915       172.23.3.32     172.23.3.85     TCP     66      [TCP 
Retransmission] 17509 →
8070 [PSH, ACK] Seq=1 Ack=1 Win=64240 Len=12
2327    66.689151       172.23.3.85     172.23.3.32     TCP     60      8070 → 
17509 [ACK] Seq=1
Ack=13 Win=4084 Len=0
2375    67.388855       172.23.3.32     172.23.3.85     TCP     66      17509 → 
8070 [PSH, ACK] Seq=13
Ack=1 Win=64240 Len=12
2388    67.688527       172.23.3.32     172.23.3.85     TCP     66      [TCP 
Retransmission] 17509 →
8070 [PSH, ACK] Seq=13 Ack=1 Win=64240 Len=12
2389    67.688746       172.23.3.85     172.23.3.32     TCP     60      8070 → 
17509 [ACK] Seq=1
Ack=25 Win=4072 Len=0
2407    68.389575       172.23.3.32     172.23.3.85     TCP     66      17509 → 
8070 [PSH, ACK] Seq=25
Ack=1 Win=64240 Len=12
2417    68.689195       172.23.3.32     172.23.3.85     TCP     66      [TCP 
Retransmission] 17509 →
8070 [PSH, ACK] Seq=25 Ack=1 Win=64240 Len=12
2418    68.689426       172.23.3.85     172.23.3.32     TCP     60      8070 → 
17509 [ACK] Seq=1
Ack=37 Win=4060 Len=0
2438    69.390307       172.23.3.32     172.23.3.85     TCP     66      17509 → 
8070 [PSH, ACK] Seq=37
Ack=1 Win=64240 Len=12
2451    69.690875       172.23.3.32     172.23.3.85     TCP     66      [TCP 
Retransmission] 17509 →
8070 [PSH, ACK] Seq=37 Ack=1 Win=64240 Len=12
2452    69.691095       172.23.3.85     172.23.3.32     TCP     60      8070 → 
17509 [ACK] Seq=1
Ack=49 Win=4048 Len=0
2498    70.390885       172.23.3.32     172.23.3.85     TCP     66      17509 → 
8070 [PSH, ACK] Seq=49
Ack=1 Win=64240 Len=12
2526    70.691392       172.23.3.32     172.23.3.85     TCP     66      [TCP 
Retransmission] 17509 →
8070 [PSH, ACK] Seq=49 Ack=1 Win=64240 Len=12
2527    70.691615       172.23.3.85     172.23.3.32     TCP     60      8070 → 
17509 [ACK] Seq=1
Ack=61 Win=4036 Len=0





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