X-Git-Url: https://www.bearssl.org/gitweb//home/git/?p=BearSSL;a=blobdiff_plain;f=src%2Fssl%2Fssl_io.c;h=1952615959ef2670e272fcaaf065fbfef75fbfbe;hp=b40963600d35655b25fa37dbc0f6283e61a7d125;hb=ea95d8264c6aefe742a9c3f4f9d834b188566a29;hpb=3210f38e0491b39aec1ef419cb4114e9483089fb

diff --git a/src/ssl/ssl_io.c b/src/ssl/ssl_io.c
index b409636..1952615 100644
--- a/src/ssl/ssl_io.c
+++ b/src/ssl/ssl_io.c
@@ -149,6 +149,9 @@ br_sslio_read(br_sslio_context *ctx, void *dst, size_t len)
 	unsigned char *buf;
 	size_t alen;
 
+	if (len == 0) {
+		return 0;
+	}
 	if (run_until(ctx, BR_SSL_RECVAPP) < 0) {
 		return -1;
 	}
@@ -188,6 +191,9 @@ br_sslio_write(br_sslio_context *ctx, const void *src, size_t len)
 	unsigned char *buf;
 	size_t alen;
 
+	if (len == 0) {
+		return 0;
+	}
 	if (run_until(ctx, BR_SSL_SENDAPP) < 0) {
 		return -1;
 	}