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-rw-r--r--system/include/sys/socket.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/system/include/sys/socket.h b/system/include/sys/socket.h
index 69bbdcaa..2955a56d 100644
--- a/system/include/sys/socket.h
+++ b/system/include/sys/socket.h
@@ -23,6 +23,7 @@ extern "C" {
#define SO_RCVBUF 60
#define SO_LINGER 70
#define SO_NOSIGPIPE 80
+#define SO_KEEPALIVE 90
#define SHUT_RDWR 1