--- parser3/src/lib/smtp/smtp.h	2004/02/11 15:33:15	1.2
+++ parser3/src/lib/smtp/smtp.h	2026/04/25 13:38:46	1.18
@@ -1,16 +1,97 @@
 /** @file
 	Parser: SMTP sender decl.
 
-	Copyright (c) 2001-2004 ArtLebedev Group (http://www.artlebedev.com)
-	Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
+	Copyright (c) 2001-2026 Art. Lebedev Studio (https://www.artlebedev.com)
+	Authors: Konstantin Morshnev <moko@design.ru>, Alexandr Petrosian <paf@design.ru>
 */
 
-static const char * const IDENT_SMTP_H="$Date: 2004/02/11 15:33:15 $";
+#define IDENT_SMTP_H "$Id: smtp.h,v 1.18 2026/04/25 13:38:46 moko Exp $"
 
 
 #include "pa_string.h"
 
-#include <winsock.h>
+#ifdef _MSC_VER
+
+#include <windows.h>
+
+#else //_MSC_VER
+
+typedef char CHAR;
+typedef u_int SOCKET;
+#define closesocket close
+inline int WSAGetLastError() { return errno; }
+
+#ifdef EPROTONOSUPPORT
+#	define WSAEPROTONOSUPPORT EPROTONOSUPPORT
+#else
+#	define WSAEPROTONOSUPPORT (10000)
+#endif
+
+#ifdef ESOCKTNOSUPPORT
+#	define WSAESOCKTNOSUPPORT ESOCKTNOSUPPORT
+#else
+#	define WSAESOCKTNOSUPPORT (10001)
+#endif
+
+#ifdef ENOTCONN
+#	define WSAENOTCONN ENOTCONN
+#else
+#	define WSAENOTCONN (10002)
+#endif
+
+#ifdef ESHUTDOWN
+#	define WSAENETDOWN ESHUTDOWN
+#else
+#	define WSAENETDOWN (10003)
+#endif
+
+#ifdef EHOSTUNREACH
+#	define WSAENETUNREACH EHOSTUNREACH
+#else
+#	define WSAENETUNREACH (10004)
+#endif
+
+#ifdef ENETRESET
+#	define WSAENETRESET ENETRESET
+#else
+#	define WSAENETRESET (10005)
+#endif
+
+#ifdef ECONNABORTED
+#	define WSAECONNABORTED ECONNABORTED
+#else
+#	define WSAECONNABORTED (10006)
+#endif
+
+#ifdef ECONNRESET
+#	define WSAECONNRESET ECONNRESET
+#else
+#	define WSAECONNRESET (10007)
+#endif
+
+#ifdef EWOULDBLOCK
+#	define WSAEWOULDBLOCK EWOULDBLOCK
+#else
+#	define WSAEWOULDBLOCK (10008)
+#endif
+
+#ifdef ECONNREFUSED
+#	define WSAECONNREFUSED ECONNREFUSED
+#else
+#	define WSAECONNREFUSED (10009)
+#endif
+
+#define WSAHOST_NOT_FOUND (10010)
+
+#ifndef INADDR_NONE
+#	define INADDR_NONE ((unsigned long) -1)
+#endif
+
+#ifndef INVALID_SOCKET
+#	define INVALID_SOCKET (SOCKET)(~0)
+#endif
+
+#endif //_MSC_VER
 
 //////////////////////////////////////////////////////////////////////////////
 
@@ -21,7 +102,8 @@ static const char * const IDENT_SMTP_H="
 #define ERR_CLOSING			4012
 #define WAIT_A_BIT			4013
 
-#define MAXOUTLINE 255
+/// must be >=SOCKET_BUFFER_SIZE, thanks to Lev Walkin <vlm@netli.com> for pointing that out
+#define MAXOUTLINE (SOCKET_BUFFER_SIZE*2)
 
 //////////////////////////////////////////////////////////////////////////////
 
@@ -61,7 +143,7 @@ public:
 
     // smtp.C
 	void	Send(const char* , const char* , const char* ,  char *, char *);
-	BOOL	MakeSmtpHeader(char *, char *, char *, char *);
+	bool	MakeSmtpHeader(char *, char *, char *, char *);
 	void	prepare_message(char *, char *,  const char* , const char* );
 	void	open_socket(const char* , const char* );
 	int		get_line(void);
@@ -74,7 +156,7 @@ public:
 	void	SendLine(const char* , unsigned long);
 	void	SendBuffer(const char* , unsigned long);
 	void	FlushBuffer();
-	BOOL	CloseConnect();
+	bool	CloseConnect();
 
     // comms.C
     int      IsAddressARawIpaddress(const char* );