1 files changed, 29 insertions, 0 deletions

diff --git a/src/OSSupport/GetAddressInfoError.h b/src/OSSupport/GetAddressInfoError.h
new file mode 100644
index 000000000..43869fb63
--- /dev/null
+++ b/src/OSSupport/GetAddressInfoError.h
@@ -0,0 +1,29 @@
+#pragma once
+
+
+
+/** Returns the readable form of a getaddressinfo type error code */
+inline AString ErrorString(int a_ErrorCode)
+{
+	// Note gai_strerror is not threadsafe on windows
+	#ifdef _WIN32
+		char ErrorStr[GAI_STRERROR_BUFFER_SIZE + 1];
+
+		int MsgLen = FormatMessageA(
+			FORMAT_MESSAGE_FROM_SYSTEM |
+			FORMAT_MESSAGE_IGNORE_INSERTS |
+			FORMAT_MESSAGE_MAX_WIDTH_MASK,
+			nullptr,
+			a_ErrorCode,
+			MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+			ErrorStr,
+			sizeof(ErrorStr) - 1,
+			nullptr
+		);
+
+		return AString(ErrorStr, MsgLen);
+	#else
+		return gai_strerror(a_ErrorCode);
+	#endif
+}
+