Check UDP pbuf for being NULL

cesanta/mongoose-os#186 PUBLISHED_FROM=30460b56211eb0dff4d05bff45f256ac1da2caf4

Check UDP pbuf for being NULL
cesanta/mongoose-os#186 PUBLISHED_FROM=30460b56211eb0dff4d05bff45f256ac1da2caf4
f20b5191 · Deomid Ryabkov · Cesanta Bot · fc113d64 · f20b5191
Commit f20b5191 authored Feb 10, 2017 by Deomid Ryabkov Committed by Cesanta Bot Feb 10, 2017
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mongoose.c mongoose.c +4 -0

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--- a/mongoose.c
+++ b/mongoose.c
@@ -14035,6 +14035,10 @@ void mg_lwip_if_udp_send(struct mg_connection *nc, const void *buf,
  struct pbuf *p = pbuf_alloc(PBUF_TRANSPORT, len, PBUF_RAM);
  ip_addr_t *ip = (ip_addr_t *) &nc->sa.sin.sin_addr.s_addr;
  u16_t port = ntohs(nc->sa.sin.sin_port);
+  if (p == NULL) {
+    DBG(("OOM"));
+    return;
+  }
  memcpy(p->payload, buf, len);
  cs->err = udp_sendto(upcb, p, (ip_addr_t *) ip, port);
  DBG(("%p udp_sendto = %d", nc, cs->err));