From c12ab688e437a72741cbd46971819a6272b3019e Mon Sep 17 00:00:00 2001
From: iofarm <ian.farm@maine.edu>
Date: Wed, 19 Nov 2025 11:53:05 -0500
Subject: [PATCH 1/4] Pass INADDR_NONE instead of IPAddress(NULL) to
 _nameFoundCallback on timeout

---
 MDNS.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/MDNS.cpp b/MDNS.cpp
index 0d3f3a2..412dd62 100644
--- a/MDNS.cpp
+++ b/MDNS.cpp
@@ -1425,8 +1425,11 @@ void MDNS::_finishedResolvingName(char* name, const byte ipAddr[4])
          uint8_t* n = this->_findFirstDotFromRight((const uint8_t*)name);
          *(n-1) = '\0';
       }
-   
-      this->_nameFoundCallback((const char*)name, IPAddress(ipAddr));
+         
+      this->_nameFoundCallback(
+         (const char*)name, 
+         (NULL != ipAddr) ? IPAddress(ipAddr) : INADDR_NONE
+      );
    }
 
    my_free(this->_resolveNames[0]);

From a252bd8e1d07b3340887d41dc9f7a6fe1d84d1b0 Mon Sep 17 00:00:00 2001
From: iofarm <ian.farm@maine.edu>
Date: Wed, 19 Nov 2025 14:37:17 -0500
Subject: [PATCH 2/4] Made _matchStringPart case-insensitive

---
 MDNS.cpp | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/MDNS.cpp b/MDNS.cpp
index 412dd62..baea264 100644
--- a/MDNS.cpp
+++ b/MDNS.cpp
@@ -1385,13 +1385,26 @@ uint8_t* MDNS::_findFirstDotFromRight(const uint8_t* str)
    return (uint8_t*)&p[2];
 }
 
+// case-insensitive memcmp
+static int cimemcmp(const void *s1, const void *s2, size_t n)
+{
+   #define TO_LOWER(c) (c >= 'A' && c <= 'Z' ? c + ('a'-'A') : c)
+   for (size_t i = 0; i < n; i ++) {
+      uint8_t c1 = *((uint8_t*)s1+i), c2 = *((uint8_t*)s2+i);
+      int dc = TO_LOWER(c1) - TO_LOWER(c2);
+      if (dc) return dc;
+   }
+   return 0;
+   #undef TO_LOWER
+}
+
 int MDNS::_matchStringPart(const uint8_t** pCmpStr, int* pCmpLen, const uint8_t* buf,
                                            int dataLen)
 {
    int matches = 1;
 
    if (*pCmpLen >= dataLen)
-      matches &= (0 == memcmp(*pCmpStr, buf, dataLen));
+      matches &= (0 == cimemcmp(*pCmpStr, buf, dataLen));
    else
       matches = 0;
 

From 7dd78a0881eb49a7bbe719e8b68b69c9a442be86 Mon Sep 17 00:00:00 2001
From: iofarm <ian.farm@maine.edu>
Date: Wed, 19 Nov 2025 14:37:17 -0500
Subject: [PATCH 3/4] Made _matchStringPart case-insensitive

---
 MDNS.cpp | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/MDNS.cpp b/MDNS.cpp
index 0d3f3a2..7e9a1c6 100644
--- a/MDNS.cpp
+++ b/MDNS.cpp
@@ -1385,13 +1385,26 @@ uint8_t* MDNS::_findFirstDotFromRight(const uint8_t* str)
    return (uint8_t*)&p[2];
 }
 
+// case-insensitive memcmp
+static int cimemcmp(const void *s1, const void *s2, size_t n)
+{
+   #define TO_LOWER(c) (c >= 'A' && c <= 'Z' ? c + ('a'-'A') : c)
+   for (size_t i = 0; i < n; i ++) {
+      uint8_t c1 = *((uint8_t*)s1+i), c2 = *((uint8_t*)s2+i);
+      int dc = TO_LOWER(c1) - TO_LOWER(c2);
+      if (dc) return dc;
+   }
+   return 0;
+   #undef TO_LOWER
+}
+
 int MDNS::_matchStringPart(const uint8_t** pCmpStr, int* pCmpLen, const uint8_t* buf,
                                            int dataLen)
 {
    int matches = 1;
 
    if (*pCmpLen >= dataLen)
-      matches &= (0 == memcmp(*pCmpStr, buf, dataLen));
+      matches &= (0 == cimemcmp(*pCmpStr, buf, dataLen));
    else
       matches = 0;
 

From 0d7c65152aafdb4cba15254656fc1af907a35b7a Mon Sep 17 00:00:00 2001
From: iofarm <ian.farm@maine.edu>
Date: Wed, 19 Nov 2025 14:45:21 -0500
Subject: [PATCH 4/4] Revert "Made _matchStringPart case-insensitive"

This reverts commit a252bd8e1d07b3340887d41dc9f7a6fe1d84d1b0.
---
 MDNS.cpp | 15 +--------------
 1 file changed, 1 insertion(+), 14 deletions(-)

diff --git a/MDNS.cpp b/MDNS.cpp
index baea264..412dd62 100644
--- a/MDNS.cpp
+++ b/MDNS.cpp
@@ -1385,26 +1385,13 @@ uint8_t* MDNS::_findFirstDotFromRight(const uint8_t* str)
    return (uint8_t*)&p[2];
 }
 
-// case-insensitive memcmp
-static int cimemcmp(const void *s1, const void *s2, size_t n)
-{
-   #define TO_LOWER(c) (c >= 'A' && c <= 'Z' ? c + ('a'-'A') : c)
-   for (size_t i = 0; i < n; i ++) {
-      uint8_t c1 = *((uint8_t*)s1+i), c2 = *((uint8_t*)s2+i);
-      int dc = TO_LOWER(c1) - TO_LOWER(c2);
-      if (dc) return dc;
-   }
-   return 0;
-   #undef TO_LOWER
-}
-
 int MDNS::_matchStringPart(const uint8_t** pCmpStr, int* pCmpLen, const uint8_t* buf,
                                            int dataLen)
 {
    int matches = 1;
 
    if (*pCmpLen >= dataLen)
-      matches &= (0 == cimemcmp(*pCmpStr, buf, dataLen));
+      matches &= (0 == memcmp(*pCmpStr, buf, dataLen));
    else
       matches = 0;