From 218c0d7385da7bc2bb4c8080e40524b58139e072 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Fri, 30 Nov 2018 00:32:57 -0800
Subject: [PATCH] Increase SSDP UDP socket recv buffer size

---
 miss/tracer.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/miss/tracer.cpp b/miss/tracer.cpp
index 57f55c6..4966e25 100644
--- a/miss/tracer.cpp
+++ b/miss/tracer.cpp
@@ -47,6 +47,13 @@ struct UPNPDev* getUPnPDevicesByAddress(IN_ADDR address)
         return nullptr;
     }
 
+    // We will be reading all responses at the end, so ensure we have ample buffer space
+    // to allow responses to accumulate without loss.
+    int recvBufferSize = 65535;
+    if (setsockopt(s, SOL_SOCKET, SO_RCVBUF, (char*)&recvBufferSize, sizeof(recvBufferSize)) == SOCKET_ERROR) {
+        printf("setsockopt() failed: %d\n", WSAGetLastError());
+    }
+
     // Send the first search message with HOST set properly
     chars = snprintf(searchBuffer, ARRAYSIZE(searchBuffer), k_SsdpSearchFormatString, inet_ntoa(address));
     if (send(s, searchBuffer, chars, 0) == SOCKET_ERROR) {