Bokhan Artem wrote:
Paul J Stevens пишет:
If you can think of, or direct me to a better approach for doing async
network reads in lmtp, please do share. I'm sure it's possible. But I
havent really dug into this yet.
Paul, I thought about nginx
(http://sysoev.ru/nginx/nginx-0.7.37.tar.gz), it is widely used as http
server, but also has functions of smtp proxy (to save cpu,
processess/threads of mta; nginx uses single-process model). Main goals
of nginx are high perfomance and very small memory usage, about 3mb per
10000 tcp connections, it supports kqueue, epoll, rt signals, /dev/poll,
event ports, select and poll methods.
Mmm, pretty much like dbmail does also, using libevent. I haven't really
looked into recvfrom. Looks to me like it's much the same as read(2).
It uses recvfrom syscall with epoll. May be you are intrested in my
information.
recvfrom(25, " }\r\n "..., 4096, 0, NULL, NULL) = 4096
recvfrom(25, "/p><p /><p"..., 4096, 0, NULL, NULL) = 4096
recvfrom(25, "0=B8 =D1=8"..., 4096, 0, NULL, NULL) = 4096
recvfrom(25, "2=D1=80=D1"..., 4096, 0, NULL, NULL) = 2192
recvfrom(25, 0x575be0, 4096, 0, 0, 0) = -1 EAGAIN (Resource
temporarily unavailable)
recvfrom(68, "DATA\r\n", 4096, 0, NULL, NULL) = 6
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