Dropped nodelay workaround

This was a performance improvement for SSH versions prior to
4.4. There is no reason to continue to support this.

1 files changed, 0 insertions, 59 deletions

diff --git a/sshnodelay.c b/sshnodelay.c
deleted file mode 100644
index a9f307c..0000000
--- a/sshnodelay.c
+++ /dev/null
@@ -1,59 +0,0 @@
-#define _GNU_SOURCE
-#include <dlfcn.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-
-/* Wrapper around connect(2) to explicitly set TCP_NODELAY. */
-static int nodelay_connect(
-    int (*real_connect)(int, const struct sockaddr *, socklen_t),
-    int sock, const struct sockaddr *addr, socklen_t addrlen)
-{
-	int res = real_connect(sock, addr, addrlen);
-	if (!res && addr->sa_family == AF_INET) {
-		int opt = 1;
-		setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt));
-	}
-	return res;
-}
-
-#if __APPLE__
-
-/* OS X does not have LD_PRELOAD but has DYLD_INSERT_LIBRARIES.  The right
- * environment variable is set by sshfs.c when attempting to load the
- * sshnodelay workaround.
- *
- * However, things are not that simple: DYLD_INSERT_LIBRARIES does not
- * behave exactly like LD_PRELOAD.  Instead, the dyld dynamic linker will
- * look for __DATA __interpose sections on the libraries given via the
- * DYLD_INSERT_LIBRARIES variable.  The contents of this section are pairs
- * of replacement functions and functions to be replaced, respectively.
- * Prepare such section here. */
-
-int custom_connect(int sock, const struct sockaddr *addr, socklen_t addrlen);
-
-typedef struct interpose_s {
-	void *new_func;
-	void *orig_func;
-} interpose_t;
-
-static const interpose_t interposers[] \
-	__attribute__ ((section("__DATA, __interpose"))) = {
-	{ (void *)custom_connect,  (void *)connect  },
-};
-
-int custom_connect(int sock, const struct sockaddr *addr, socklen_t addrlen)
-{
-	return nodelay_connect(connect, sock, addr, addrlen);
-}
-
-#else /* !__APPLE__ */
-
-int connect(int sock, const struct sockaddr *addr, socklen_t addrlen)
-{
-	return nodelay_connect(dlsym(RTLD_NEXT, "connect"),
-	                       sock, addr, addrlen);
-}
-
-#endif /* !__APPLE__ */