recv treat zero return as error

https://github.com/warmcat/libwebsockets/issues/475

diff --git a/lib/output.c b/lib/output.c
index 9edc28f..420146f 100644 (file)
--- a/lib/output.c
+++ b/lib/output.c
@@ -630,7 +630,7 @@ lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len)
        int n;
 
        n = recv(wsi->sock, (char *)buf, len, 0);
-       if (n >= 0)
+       if (n > 0)
                return n;
 #if LWS_POSIX
        if (LWS_ERRNO == LWS_EAGAIN ||