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more fixes to reduce latency. nagle agorithm doesn't seem to

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stay off on a socket on linux because a connection clearly
doesn't send data as often as possible.  will have to implement
a UDP socket to reduce overhead and avoid these delays.  wanted
to do that anyway.
This commit is contained in:
crs
2001-05-13 12:43:16 +00:00
parent d0594ea9f3
commit fe79ac593c
2 changed files with 17 additions and 6 deletions
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20
CUnixTCPSocket.cpp
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@@ -31,12 +31,8 @@ CUnixTCPSocket::CUnixTCPSocket() : m_fd(-1),
throw XSocketCreate(::strerror(errno));
}
// turn off Nagle algorithm. we send lots of really short messages.
struct protoent* p = getprotobyname("tcp");
if (p) {
int on = 1;
setsockopt(m_fd, p->p_proto, TCP_NODELAY, &on, sizeof(on));
}
// always send immediately
setNoDelay();
}
CUnixTCPSocket::CUnixTCPSocket(int fd) : m_fd(fd),
@@ -44,6 +40,7 @@ CUnixTCPSocket::CUnixTCPSocket(int fd) : m_fd(fd),
m_addedJobs(false)
{
assert(m_fd != -1);
setNoDelay();
}
CUnixTCPSocket::~CUnixTCPSocket()
@@ -268,3 +265,14 @@ void CUnixTCPSocket::write(
numBytes -= n;
}
}
void CUnixTCPSocket::setNoDelay()
{
// turn off Nagle algorithm. we send lots of really short messages
// so we'll accept the (much) larger overhead to reduce latency.
struct protoent* p = getprotobyname("tcp");
if (p) {
int on = 1;
setsockopt(m_fd, p->p_proto, TCP_NODELAY, &on, sizeof(on));
}
}