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Subject[PROBLEM] socket buffering problem in 2.2.19


There seems to be some kind of a buffering problem in the 2.2.19
kernel. The following sequence of system calls on a nonblocking TCP
socket (on the client side) generates a broken pipe:

write(2) HTTP REQUEST read(2)
2. HTTP client --------------------> HTTP Server

3. HTTP client <--------------------- HTTP Server

shutdown(2), close(2)
4. HTTP client <--------------------- HTTP Server

select(2) returns,
read(2) => broken pipe, HTTP response is lost
5. HTTP client <----X

The client in this situation is a bit sluggish and sometimes does not have
time to read the data before the server has called shutdown and close
(and the client receives a TCP FIN).

The Linux 2.4.3 kernel and Solaris 7 & 8 seem to perform the buffering of
data ok on the client side.

Any ideas or suggestions ( other than upgrade to 2.4 :-) ) ?

Regards, Tomi

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