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Set TCP_NODELAY on the ps2link request socket #25

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Set TCP_NODELAY on the ps2link request socket #25

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10 changes: 10 additions & 0 deletions src/network.c
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#endif

#include "network.h"
Expand Down Expand Up @@ -36,6 +37,15 @@
// Open the socket.
sock = socket(AF_INET, type, 0); if (sock < 0) { return -1; }

// Disable Nagle on the request channel: ps2link's fileio is a synchronous
// sequence of small request/response exchanges, and Nagle on this side
// colliding with the PS2's delayed ACKs stalls every exchange ~200ms
// (observed ~4 KB/s file serving; with TCP_NODELAY it is wire-speed).
if (type == SOCK_STREAM) {
int nodelay = 1;
setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (void *)&nodelay, sizeof(nodelay));
}

// Connect the socket.
if (connect(sock, (struct sockaddr *)&sockaddr, sizeof(struct sockaddr)) < 0) { return -2; }

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