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-rw-r--r--src/common/compat.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/common/compat.h b/src/common/compat.h
index 5bf12cdf89..4329d45369 100644
--- a/src/common/compat.h
+++ b/src/common/compat.h
@@ -399,11 +399,19 @@ typedef int socklen_t;
#endif
#ifdef MS_WINDOWS
+/* XXX Actually, this should arguably be SOCKET; we use intptr_t here so that
+ * any inadvertant checks for the socket being <= 0 or > 0 will probably
+ * still work. */
#define tor_socket_t intptr_t
#define SOCKET_OK(s) ((SOCKET)(s) != INVALID_SOCKET)
+#define TOR_INVALID_SOCKET INVALID_SOCKET
#else
+/** Type used for a network socket. */
#define tor_socket_t int
+/** Macro: true iff 's' is a possible value for a valid initialized socket. */
#define SOCKET_OK(s) ((s) >= 0)
+/** Error/uninitialized value for a tor_socket_t. */
+#define TOR_INVALID_SOCKET (-1)
#endif
int tor_close_socket(tor_socket_t s);