Add -2 return code to read() calls that may feature an EAGAIN

1 files changed, 7 insertions, 1 deletions

diff --git a/vchat-tls.c b/vchat-tls.c
index a6e5e2d..8154521 100755
--- a/vchat-tls.c
+++ b/vchat-tls.c
@@ -464,7 +464,13 @@ ssize_t vc_tls_sendmessage(const void *buf, size_t size) {
 }
 
 ssize_t vc_tls_receivemessage(void *buf, size_t size) {
-   return BIO_read (server_conn, buf, size);
+   ssize_t received = (ssize_t)BIO_read (server_conn, buf, size);
+   fprintf(stderr, "%zd\n", received);
+   if (received != 0)
+      return received;
+   if (BIO_should_retry(server_conn))
+      return -2;
+   return 0;
 }
 
 void vc_tls_cleanup() {