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diff --git a/3rdParty/libquickmail/smtpsocket.h b/3rdParty/libquickmail/smtpsocket.h
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+++ b/3rdParty/libquickmail/smtpsocket.h
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+/*! \file      smtpsocket.h
+ *  \brief     header file for TCP/IP socket and SMTP communication functions
+ *  \author    Brecht Sanders
+ *  \date      2012-2013
+ *  \copyright GPL
+ */
+/*
+    This file is part of libquickmail.
+
+    libquickmail is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    libquickmail is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with libquickmail.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __INCLUDED_SMTPSOCKET_H
+#define __INCLUDED_SMTPSOCKET_H
+
+#ifdef _WIN32
+#include <winsock2.h>
+#else
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#ifndef SOCKET
+#define SOCKET int
+#endif
+#ifndef INVALID_SOCKET
+#define INVALID_SOCKET -1
+#endif
+#ifndef SOCKET_ERROR
+#define SOCKET_ERROR -1
+#endif
+#endif
+#include <stdio.h>
+#include <stdarg.h>
+
+#define READ_BUFFER_CHUNK_SIZE 128
+#define WRITE_BUFFER_CHUNK_SIZE 128
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*! \brief connect network socket
+ * \param  smtpserver      hostname or IP address of server
+ * \param  smtpport        TCP port to connect to
+ * \param  errmsg          optional pointer to where error message will be stored (must not be freed by caller)
+ * \return open network socket or INVALID_SOCKET on error
+*/
+SOCKET socket_open (const char* smtpserver, unsigned int smtpport, char** errmsg);
+
+/*! \brief disconnect network socket
+ * \param  sock        open network socket
+*/
+void socket_close (SOCKET sock);
+
+/*! \brief send data to a network socket
+ * \param  sock        open network socket
+ * \param  buf         buffer containing data
+ * \param  len         size of buffer in bytes
+ * \return number of bytes sent
+*/
+int socket_send (SOCKET sock, const char* buf, int len);
+
+/*! \brief check if data is waiting to be read from network socket
+ * \param  sock            open network socket
+ * \param  timeoutseconds  number of seconds to wait (0 to return immediately)
+ * \return nonzero if data is waiting
+*/
+int socket_data_waiting (SOCKET sock, int timeoutseconds);
+
+/*! \brief read SMTP response from network socket
+ * \param  sock            open network socket
+ * \return null-terminated string containing received data (must be freed by caller), or NULL
+*/
+char* socket_receive_stmp (SOCKET sock);
+
+/*! \brief read SMTP response from network socket
+ * \param  sock            open network socket
+ * \param  errmsg          optional pointer to where error message will be stored (must be freed by caller)
+ * \return SMTP status code (code >= 400 means error)
+*/
+int socket_get_smtp_code (SOCKET sock, char** errmsg);
+
+/*! \brief send SMTP command and return status code
+ * \param  sock            open network socket
+ * \param  debuglog        file handle to write debugging information to (NULL for no debugging)
+ * \param  template        printf style formatting template
+ * \return SMTP status code (code >= 400 means error)
+*/
+int socket_smtp_command (SOCKET sock, FILE* debuglog, const char* template, ...);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //__INCLUDED_SMTPSOCKET_H