1 files changed, 6 insertions, 0 deletions
diff --git a/c/sock.h b/c/sock.h
index 9e4dd40..876e85c 100644
--- a/c/sock.h
+++ b/c/sock.h
@@ -42,6 +42,12 @@ static unsigned char net_recv(unsigned char s, void *buf, unsigned char max) {
     _nr.op = 3; _nr.sock = s; _nr.buf = (unsigned char *)buf; _nr.len = max;
     return sys_net(&_nr);
 }
+/* non-blocking recv: one RX pump -> length, 0xFE if nothing buffered yet,
+   0 on TCP EOF. Loop it with msleep() to own your timeout (see ping). */
+static unsigned char net_recv_nb(unsigned char s, void *buf, unsigned char max) {
+    _nr.op = 8; _nr.sock = s; _nr.buf = (unsigned char *)buf; _nr.len = max;
+    return sys_net(&_nr);
+}
 /* set the local (source) port - needed so UDP replies demux back to us */
 static unsigned char net_bind(unsigned char s, unsigned int port) {
     _nr.op = 5; _nr.sock = s;