|
|
|---|
| 2204 |
header.SetDestinationPort (m_endPoint6->GetPeerPort ()); |
2204 |
header.SetDestinationPort (m_endPoint6->GetPeerPort ()); |
| 2205 |
} |
2205 |
} |
| 2206 |
AddOptions (header); |
2206 |
AddOptions (header); |
| 2207 |
header.SetWindowSize (AdvertisedWindowSize ()); |
|
|
| 2208 |
|
2207 |
|
| 2209 |
// RFC 6298, clause 2.4 |
2208 |
// RFC 6298, clause 2.4 |
| 2210 |
m_rto = Max (m_rtt->GetEstimate () + Max (m_clockGranularity, m_rtt->GetVariation () * 4), m_minRto); |
2209 |
m_rto = Max (m_rtt->GetEstimate () + Max (m_clockGranularity, m_rtt->GetVariation () * 4), m_minRto); |
| 2211 |
|
2210 |
|
|
|
2211 |
uint16_t windowSize = AdvertisedWindowSize (); |
| 2212 |
bool hasSyn = flags & TcpHeader::SYN; |
2212 |
bool hasSyn = flags & TcpHeader::SYN; |
| 2213 |
bool hasFin = flags & TcpHeader::FIN; |
2213 |
bool hasFin = flags & TcpHeader::FIN; |
| 2214 |
bool isAck = flags == TcpHeader::ACK; |
2214 |
bool isAck = flags == TcpHeader::ACK; |
|
|
|---|
| 2241 |
{ // This is SYN retransmission |
2241 |
{ // This is SYN retransmission |
| 2242 |
UpdateRttHistory (s, 0, true); |
2242 |
UpdateRttHistory (s, 0, true); |
| 2243 |
} |
2243 |
} |
|
|
2244 |
|
| 2245 |
windowSize = AdvertisedWindowSize (false); |
| 2244 |
} |
2246 |
} |
|
|
2247 |
header.SetWindowSize (windowSize); |
| 2245 |
|
2248 |
|
| 2246 |
m_txTrace (p, header, this); |
2249 |
m_txTrace (p, header, this); |
| 2247 |
|
2250 |
|
|
|
|---|
| 2702 |
} |
2705 |
} |
| 2703 |
|
2706 |
|
| 2704 |
uint16_t |
2707 |
uint16_t |
| 2705 |
TcpSocketBase::AdvertisedWindowSize () const |
2708 |
TcpSocketBase::AdvertisedWindowSize (bool scale) const |
| 2706 |
{ |
2709 |
{ |
|
|
2710 |
NS_LOG_FUNCTION (this << scale); |
| 2707 |
uint32_t w = m_rxBuffer->MaxBufferSize (); |
2711 |
uint32_t w = m_rxBuffer->MaxBufferSize (); |
| 2708 |
|
2712 |
|
| 2709 |
w >>= m_rcvWindShift; |
2713 |
if (scale) |
| 2710 |
|
2714 |
{ |
|
|
2715 |
w >>= m_rcvWindShift; |
| 2716 |
} |
| 2711 |
if (w > m_maxWinSize) |
2717 |
if (w > m_maxWinSize) |
| 2712 |
{ |
2718 |
{ |
| 2713 |
NS_LOG_WARN ("There is a loss in the adv win size, wrt buffer size"); |
|
|
| 2714 |
w = m_maxWinSize; |
2719 |
w = m_maxWinSize; |
|
|
2720 |
NS_LOG_WARN ("Adv window size truncated to " << m_maxWinSize << "; possibly to avoid overflow of the 16-bit integer"); |
| 2715 |
} |
2721 |
} |
| 2716 |
|
2722 |
NS_LOG_DEBUG ("Returning AdvertisedWindowSize of " << static_cast<uint16_t> (w)); |
| 2717 |
return (uint16_t) w; |
2723 |
return static_cast<uint16_t> (w); |
| 2718 |
} |
2724 |
} |
| 2719 |
|
2725 |
|
| 2720 |
// Receipt of new packet, put into Rx buffer |
2726 |
// Receipt of new packet, put into Rx buffer |