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daemon: Set TCP_NODELAY and TCP_QUICKACK on remote sockets. 

* nix/nix-daemon/nix-daemon.cc (acceptConnection): Set TCP_NODELAY and
TCP_QUICKACK on REMOTE.
This commit is contained in:
Ludovic Courtès 2017-06-22 10:56:18 +02:00 committed by Ludovic Courtès
parent 1071f781d9
commit 6efb578a14
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1 changed files with 18 additions and 0 deletions
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18
nix/nix-daemon/nix-daemon.cc
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@ -19,6 +19,9 @@
#include <sys/socket.h> #include <sys/socket.h>
#include <sys/un.h> #include <sys/un.h>
#include <arpa/inet.h> #include <arpa/inet.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <fcntl.h> #include <fcntl.h>
#include <errno.h> #include <errno.h>
#include <pwd.h> #include <pwd.h>
@ -839,6 +842,21 @@ static void acceptConnection(int fdSocket)
closeOnExec(remote); closeOnExec(remote);
{
int enabled = 1;
/* If we're on a TCP connection, disable Nagle's algorithm so that
data is sent as soon as possible. */
(void) setsockopt(remote, SOL_TCP, TCP_NODELAY,
&enabled, sizeof enabled);
#if defined(TCP_QUICKACK)
/* Enable TCP quick-ack if applicable; this might help a little. */
(void) setsockopt(remote, SOL_TCP, TCP_QUICKACK,
&enabled, sizeof enabled);
#endif
}
pid_t clientPid = -1; pid_t clientPid = -1;
bool trusted = false; bool trusted = false;