Prevent the "Connection reset by peer" messages often seen from Cygwin.

[rsync/rsync.git] / cleanup.c

diff --git a/cleanup.c b/cleanup.c
index 8543217..2a85083 100644 (file)
--- a/cleanup.c
+++ b/cleanup.c
@@ -21,6 +21,32 @@
 
 #include "rsync.h"
 
+/**
+ * Close all open sockets and files, allowing a (somewhat) graceful
+ * shutdown() of socket connections.  This eliminates the abortive
+ * TCP RST sent by a Winsock-based system when the close() occurs.
+ **/
+void close_all()
+{
+#ifdef SHUTDOWN_ALL_SOCKETS
+       int max_fd;
+       int fd;
+       int ret;
+       struct stat st;
+
+       max_fd = sysconf(_SC_OPEN_MAX) - 1;
+       for (fd = max_fd; fd >= 0; fd--) {
+               ret = fstat(fd,&st);
+               if (fstat(fd,&st) == 0) {
+                       if (is_a_socket(fd)) {
+                               ret = shutdown(fd, 2);
+                       }
+                       ret = close(fd);
+               }
+       }
+#endif
+}
+
 /**
  * @file cleanup.c
  *
@@ -115,6 +141,7 @@ void _exit_cleanup(int code, const char *file, int line)
                rprintf(FINFO,"_exit_cleanup(code=%d, file=%s, line=%d): about to call exit(%d)\n", 
                        ocode, file, line, code);
 
+       close_all();
        exit(code);
 }