sorry to disturbing. I have truble in my application which should found
network failure as soon as possible. I know,normally tcp send will buffered
data in system send buffer and send out later. and ,the ack won't send back
immedealy for some function to improve tcp performace such as Neagle .How
can i force the send fuction to send the data to the network without
buffering in local buffer?
What i want to do is when i send out a frame of data via socket,i can get
response like n equal to the length of the frame when remote peer received
the frame of the data ,or -1 when timeout without responce.
Re: Coordinating TCP projects ... It is rapidly becoming clear that quite a few of us have Big Plans for the TCP implementation over the next 12-18 months. ... Jim and I recently discussed the idea of implementing autotuning of the TCP reassembly queue size based on analysis of some experimental work we've been doing. ... This means that if the TCP window grows to be more than 48 segments wide, and a packet is lost, the receiver will buffer the next 48 segments in the reassembly queue and subsequently drop all the remaining segments in the window because the reassembly buffer is full i.e. 1 packet loss in the network can equate to many packet losses at the receiver because of insufficient buffering. ... We observed that the socket receive buffer size provides a good indication of the expected number of bytes in flight for a connection, and can therefore serve as the figure to base the size of the reassembly queue on. ... (freebsd-arch)
Re: Coordinating TCP projects ... It is rapidly becoming clear that quite a few of us have Big Plans for the TCP implementation over the next 12-18 months. ... Jim and I recently discussed the idea of implementing autotuning of the TCP reassembly queue size based on analysis of some experimental work we've been doing. ... This means that if the TCP window grows to be more than 48 segments wide, and a packet is lost, the receiver will buffer the next 48 segments in the reassembly queue and subsequently drop all the remaining segments in the window because the reassembly buffer is full i.e. 1 packet loss in the network can equate to many packet losses at the receiver because of insufficient buffering. ... We observed that the socket receive buffer size provides a good indication of the expected number of bytes in flight for a connection, and can therefore serve as the figure to base the size of the reassembly queue on. ... (freebsd-net)
Re: Coordinating TCP projects ... It is rapidly becoming clear that quite a few of us have Big Plans for the TCP implementation over the next 12-18 months. ... Jim and I recently discussed the idea of implementing autotuning of the TCP reassembly queue size based on analysis of some experimental work we've been doing. ... This means that if the TCP window grows to be more than 48 segments wide, and a packet is lost, the receiver will buffer the next 48 segments in the reassembly queue and subsequently drop all the remaining segments in the window because the reassembly buffer is full i.e. 1 packet loss in the network can equate to many packet losses at the receiver because of insufficient buffering. ... We observed that the socket receive buffer size provides a good indication of the expected number of bytes in flight for a connection, and can therefore serve as the figure to base the size of the reassembly queue on. ... (freebsd-arch)
Re: Coordinating TCP projects ... It is rapidly becoming clear that quite a few of us have Big Plans for the TCP implementation over the next 12-18 months. ... Jim and I recently discussed the idea of implementing autotuning of the TCP reassembly queue size based on analysis of some experimental work we've been doing. ... This means that if the TCP window grows to be more than 48 segments wide, and a packet is lost, the receiver will buffer the next 48 segments in the reassembly queue and subsequently drop all the remaining segments in the window because the reassembly buffer is full i.e. 1 packet loss in the network can equate to many packet losses at the receiver because of insufficient buffering. ... We observed that the socket receive buffer size provides a good indication of the expected number of bytes in flight for a connection, and can therefore serve as the figure to base the size of the reassembly queue on. ... (freebsd-net)
Re: How to I force a Data to be send out at once in socket send ... > network failure as soon as possible. ... I know,normally tcp send will buffered ... > data in system send buffer and send out later. ... Why do you care when the remote TCP has ... (comp.unix.programmer)
