[Ns-bugs] [Bug 371] examples/wifi-ap.cc is broken in NS 3.2

[bugzilla-daemon@nsnam-www.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=371





------- Comment #3 from gjcarneiro at gmail.com  2008-10-10 06:42 -------
While reviving the wifi scanning code I hit the same problem as this one. 
Here's some debugging of what happens when a AP tries to send a ProbeResponse,
using RTS/CTS:

## AP sending ProbeResponse
1150080016ns NqapWifiMac:SendProbeResp(0x6400b0, 00:00:00:00:00:01)
1150114016ns MacLow:StartTransmission(0x640270, 0x645100, 0x640798, [send
rts=1, next size=0, dur=0ns, ack=normal], 0x6407e0)
1150114016ns MacLow:CancelAllEvents(0x640270)
1150114016ns MacLow:StartTransmission(): 00:00:00:00:00:03 startTx size=64,
to=00:00:00:00:00:01, listener=0x6407e0
1150114016ns MacLow:SendRtsForPacket(0x640270)
1150114016ns MacLow:ForwardDown(0x640270, 0x6451a0, 0x7fffca71b9e0, wifia-6mbs)

### AP sends RTS
1150114016ns MacLow:ForwardDown(): 00:00:00:00:00:03 send CTL_RTS,
to=00:00:00:00:00:01, size=20, mode=wifia-6mbs, duration=248000ns, seq=0x0
----- 2000ns ellapsed
### CTS timeout after 2000ns, in the AP
1150166016ns MacLow:CtsTimeout(0x640270)
1150166016ns MacLow:CtsTimeout(): 00:00:00:00:00:03 cts timeout
----- 16ns ellapsed
### The RTS is received by the STA 20016ns after the it was sent
1150166032ns MacLow:ReceiveOk(0x63d390, ns3::WifiMacHeader (CTL_RTS
Duration/ID=248us, RA=00:00:00:00:00:01, TA=00:00:00:00:00:03)
ns3::WifiMacTrailer (), 27163.3, wifia-6mbs, 0)
1150166032ns MacLow:ReceiveOk(): 00:00:00:00:00:01 duration/id=248000ns
1150166032ns MacLow:ReceiveOk(): hdr.IsCts (): 0; hdr.GetAddr1 ():
00:00:00:00:00:01; m_self: 00:00:00:00:00:01; m_ctsTimeoutEvent.IsRunning ():
0; m_currentPacket: 0
1150166032ns MacLow:ReceiveOk(): 00:00:00:00:00:01 rx RTS
from=00:00:00:00:00:03, schedule CTS
----- 16000ns ellapsed
### The CTS is sent by the STA 68016ns after the RTS was sent by the AP
1150182032ns MacLow:SendCtsAfterRts(0x63d390)
1150182032ns MacLow:ForwardDown(0x63d390, 0x644ae0, 0x7fffca71c370, wifia-6mbs)
1150182032ns MacLow:ForwardDown(): 00:00:00:00:00:01 send CTL_CTS,
to=00:00:00:00:00:03, size=14, mode=wifia-6mbs, duration=188000ns, seq=0x30
----- 44016ns ellapsed
### The CTS is received by the AP 112032ns after the RTS was sent
1150226048ns MacLow:ReceiveOk(0x640270, ns3::WifiMacHeader (CTL_CTS
Duration/ID=188us, RA=00:00:00:00:00:03) ns3::WifiMacTrailer (), 27163.3,
wifia-6mbs, 0)
1150226048ns MacLow:ReceiveOk(): 00:00:00:00:00:03 duration/id=188000ns
1150226048ns MacLow:ReceiveOk(): hdr.IsCts (): 1; hdr.GetAddr1 ():
00:00:00:00:00:03; m_self: 00:00:00:00:00:03; m_ctsTimeoutEvent.IsRunning ():
0; m_currentPacket: 0
1150226048ns MacLow:ReceiveOk(): 00:00:00:00:00:03 rx drop CTL_CTS


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