diff --git a/README b/README
index b551540..7f12bc0 100644
--- a/README
+++ b/README
@@ -71,6 +71,9 @@ https://github.com/ocrespo/VNCpp
 VirtualBox
 https://www.virtualbox.org/
 
+Veyon
+https://veyon.io
+
 Mail me, if your application is missing!
 
 How to build
diff --git a/libvncclient/rfbproto.c b/libvncclient/rfbproto.c
index a024bb4..5679b06 100644
--- a/libvncclient/rfbproto.c
+++ b/libvncclient/rfbproto.c
@@ -1253,6 +1253,7 @@ SetFormatAndEncodings(rfbClient* client)
   if (!SupportsClient2Server(client, rfbSetEncodings)) return TRUE;
 
   se->type = rfbSetEncodings;
+  se->pad = 0;
   se->nEncodings = 0;
 
   if (client->appData.encodingsString) {
diff --git a/libvncclient/sasl.c b/libvncclient/sasl.c
index 0530307..db240c1 100644
--- a/libvncclient/sasl.c
+++ b/libvncclient/sasl.c
@@ -41,6 +41,9 @@
 #ifdef WIN32
 #undef SOCKET
 #include <winsock2.h>
+#ifdef EWOULDBLOCK
+#undef EWOULDBLOCK
+#endif
 #define EWOULDBLOCK WSAEWOULDBLOCK
 #define socklen_t int
 #define close closesocket
diff --git a/libvncclient/sockets.c b/libvncclient/sockets.c
index ed2deef..f042472 100644
--- a/libvncclient/sockets.c
+++ b/libvncclient/sockets.c
@@ -40,6 +40,9 @@
 #ifdef WIN32
 #undef SOCKET
 #include <winsock2.h>
+#ifdef EWOULDBLOCK
+#undef EWOULDBLOCK
+#endif
 #define EWOULDBLOCK WSAEWOULDBLOCK
 #define close closesocket
 #define read(sock,buf,len) recv(sock,buf,len,0)
diff --git a/libvncclient/tls.h b/libvncclient/tls.h
index a5a2ac6..ffcfdeb 100644
--- a/libvncclient/tls.h
+++ b/libvncclient/tls.h
@@ -43,7 +43,7 @@ int ReadFromTLS(rfbClient* client, char *out, unsigned int n);
  * It's a wrapper function over gnutls_record_send() and it will be
  * blocking call, until all bytes are written or error returned.
  */
-int WriteToTLS(rfbClient* client, char *buf, unsigned int n);
+int WriteToTLS(rfbClient* client, const char *buf, unsigned int n);
 
 /* Free TLS resources */
 void FreeTLS(rfbClient* client);
diff --git a/libvncclient/tls_gnutls.c b/libvncclient/tls_gnutls.c
index f146d2a..ec3c450 100644
--- a/libvncclient/tls_gnutls.c
+++ b/libvncclient/tls_gnutls.c
@@ -589,7 +589,7 @@ ReadFromTLS(rfbClient* client, char *out, unsigned int n)
 }
 
 int
-WriteToTLS(rfbClient* client, char *buf, unsigned int n)
+WriteToTLS(rfbClient* client, const char *buf, unsigned int n)
 {
   unsigned int offset = 0;
   ssize_t ret;
diff --git a/libvncclient/tls_none.c b/libvncclient/tls_none.c
index 4dfcb27..d436ce9 100644
--- a/libvncclient/tls_none.c
+++ b/libvncclient/tls_none.c
@@ -43,7 +43,7 @@ int ReadFromTLS(rfbClient* client, char *out, unsigned int n)
 }
 
 
-int WriteToTLS(rfbClient* client, char *buf, unsigned int n)
+int WriteToTLS(rfbClient* client, const char *buf, unsigned int n)
 {
   rfbClientLog("TLS is not supported.\n");
   errno = EINTR;
diff --git a/libvncclient/tls_openssl.c b/libvncclient/tls_openssl.c
index fe60147..e2fadb2 100644
--- a/libvncclient/tls_openssl.c
+++ b/libvncclient/tls_openssl.c
@@ -640,7 +640,7 @@ ReadFromTLS(rfbClient* client, char *out, unsigned int n)
 }
 
 int
-WriteToTLS(rfbClient* client, char *buf, unsigned int n)
+WriteToTLS(rfbClient* client, const char *buf, unsigned int n)
 {
   unsigned int offset = 0;
   ssize_t ret;
diff --git a/libvncserver/sockets.c b/libvncserver/sockets.c
index bbc3d90..fe54a37 100644
--- a/libvncserver/sockets.c
+++ b/libvncserver/sockets.c
@@ -109,7 +109,13 @@ int deny_severity=LOG_WARNING;
 #pragma warning (disable: 4018 4761)
 #endif
 #define read(sock,buf,len) recv(sock,buf,len,0)
+#ifdef EWOULDBLOCK
+#undef EWOULDBLOCK
+#endif
 #define EWOULDBLOCK WSAEWOULDBLOCK
+#ifdef ETIMEDOUT
+#undef ETIMEDOUT
+#endif
 #define ETIMEDOUT WSAETIMEDOUT
 #define write(sock,buf,len) send(sock,buf,len,0)
 #else
diff --git a/rfb/default8x16.h b/rfb/default8x16.h
index 252f411..6096b1c 100644
--- a/rfb/default8x16.h
+++ b/rfb/default8x16.h
@@ -1,3 +1,6 @@
+#ifndef _DEFAULT_8_X_16_H
+#define _DEFAULT_8_X_16_H
+
 static unsigned char default8x16FontData[4096+1]={
 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
 0x00,0x00,0x7e,0x81,0xa5,0x81,0x81,0xbd,0x99,0x81,0x81,0x7e,0x00,0x00,0x00,0x00,
@@ -259,3 +262,5 @@ static unsigned char default8x16FontData[4096+1]={
 static int default8x16FontMetaData[256*5+1]={
 0,8,16,0,0,16,8,16,0,0,32,8,16,0,0,48,8,16,0,0,64,8,16,0,0,80,8,16,0,0,96,8,16,0,0,112,8,16,0,0,128,8,16,0,0,144,8,16,0,0,160,8,16,0,0,176,8,16,0,0,192,8,16,0,0,208,8,16,0,0,224,8,16,0,0,240,8,16,0,0,256,8,16,0,0,272,8,16,0,0,288,8,16,0,0,304,8,16,0,0,320,8,16,0,0,336,8,16,0,0,352,8,16,0,0,368,8,16,0,0,384,8,16,0,0,400,8,16,0,0,416,8,16,0,0,432,8,16,0,0,448,8,16,0,0,464,8,16,0,0,480,8,16,0,0,496,8,16,0,0,512,8,16,0,0,528,8,16,0,0,544,8,16,0,0,560,8,16,0,0,576,8,16,0,0,592,8,16,0,0,608,8,16,0,0,624,8,16,0,0,640,8,16,0,0,656,8,16,0,0,672,8,16,0,0,688,8,16,0,0,704,8,16,0,0,720,8,16,0,0,736,8,16,0,0,752,8,16,0,0,768,8,16,0,0,784,8,16,0,0,800,8,16,0,0,816,8,16,0,0,832,8,16,0,0,848,8,16,0,0,864,8,16,0,0,880,8,16,0,0,896,8,16,0,0,912,8,16,0,0,928,8,16,0,0,944,8,16,0,0,960,8,16,0,0,976,8,16,0,0,992,8,16,0,0,1008,8,16,0,0,1024,8,16,0,0,1040,8,16,0,0,1056,8,16,0,0,1072,8,16,0,0,1088,8,16,0,0,1104,8,16,0,0,1120,8,16,0,0,1136,8,16,0,0,1152,8,16,0,0,1168,8,16,0,0,1184,8,16,0,0,1200,8,16,0,0,1216,8,16,0,0,1232,8,16,0,0,1248,8,16,0,0,1264,8,16,0,0,1280,8,16,0,0,1296,8,16,0,0,1312,8,16,0,0,1328,8,16,0,0,1344,8,16,0,0,1360,8,16,0,0,1376,8,16,0,0,1392,8,16,0,0,1408,8,16,0,0,1424,8,16,0,0,1440,8,16,0,0,1456,8,16,0,0,1472,8,16,0,0,1488,8,16,0,0,1504,8,16,0,0,1520,8,16,0,0,1536,8,16,0,0,1552,8,16,0,0,1568,8,16,0,0,1584,8,16,0,0,1600,8,16,0,0,1616,8,16,0,0,1632,8,16,0,0,1648,8,16,0,0,1664,8,16,0,0,1680,8,16,0,0,1696,8,16,0,0,1712,8,16,0,0,1728,8,16,0,0,1744,8,16,0,0,1760,8,16,0,0,1776,8,16,0,0,1792,8,16,0,0,1808,8,16,0,0,1824,8,16,0,0,1840,8,16,0,0,1856,8,16,0,0,1872,8,16,0,0,1888,8,16,0,0,1904,8,16,0,0,1920,8,16,0,0,1936,8,16,0,0,1952,8,16,0,0,1968,8,16,0,0,1984,8,16,0,0,2000,8,16,0,0,2016,8,16,0,0,2032,8,16,0,0,2048,8,16,0,0,2064,8,16,0,0,2080,8,16,0,0,2096,8,16,0,0,2112,8,16,0,0,2128,8,16,0,0,2144,8,16,0,0,2160,8,16,0,0,2176,8,16,0,0,2192,8,16,0,0,2208,8,16,0,0,2224,8,16,0,0,2240,8,16,0,0,2256,8,16,0,0,2272,8,16,0,0,2288,8,16,0,0,2304,8,16,0,0,2320,8,16,0,0,2336,8,16,0,0,2352,8,16,0,0,2368,8,16,0,0,2384,8,16,0,0,2400,8,16,0,0,2416,8,16,0,0,2432,8,16,0,0,2448,8,16,0,0,2464,8,16,0,0,2480,8,16,0,0,2496,8,16,0,0,2512,8,16,0,0,2528,8,16,0,0,2544,8,16,0,0,2560,8,16,0,0,2576,8,16,0,0,2592,8,16,0,0,2608,8,16,0,0,2624,8,16,0,0,2640,8,16,0,0,2656,8,16,0,0,2672,8,16,0,0,2688,8,16,0,0,2704,8,16,0,0,2720,8,16,0,0,2736,8,16,0,0,2752,8,16,0,0,2768,8,16,0,0,2784,8,16,0,0,2800,8,16,0,0,2816,8,16,0,0,2832,8,16,0,0,2848,8,16,0,0,2864,8,16,0,0,2880,8,16,0,0,2896,8,16,0,0,2912,8,16,0,0,2928,8,16,0,0,2944,8,16,0,0,2960,8,16,0,0,2976,8,16,0,0,2992,8,16,0,0,3008,8,16,0,0,3024,8,16,0,0,3040,8,16,0,0,3056,8,16,0,0,3072,8,16,0,0,3088,8,16,0,0,3104,8,16,0,0,3120,8,16,0,0,3136,8,16,0,0,3152,8,16,0,0,3168,8,16,0,0,3184,8,16,0,0,3200,8,16,0,0,3216,8,16,0,0,3232,8,16,0,0,3248,8,16,0,0,3264,8,16,0,0,3280,8,16,0,0,3296,8,16,0,0,3312,8,16,0,0,3328,8,16,0,0,3344,8,16,0,0,3360,8,16,0,0,3376,8,16,0,0,3392,8,16,0,0,3408,8,16,0,0,3424,8,16,0,0,3440,8,16,0,0,3456,8,16,0,0,3472,8,16,0,0,3488,8,16,0,0,3504,8,16,0,0,3520,8,16,0,0,3536,8,16,0,0,3552,8,16,0,0,3568,8,16,0,0,3584,8,16,0,0,3600,8,16,0,0,3616,8,16,0,0,3632,8,16,0,0,3648,8,16,0,0,3664,8,16,0,0,3680,8,16,0,0,3696,8,16,0,0,3712,8,16,0,0,3728,8,16,0,0,3744,8,16,0,0,3760,8,16,0,0,3776,8,16,0,0,3792,8,16,0,0,3808,8,16,0,0,3824,8,16,0,0,3840,8,16,0,0,3856,8,16,0,0,3872,8,16,0,0,3888,8,16,0,0,3904,8,16,0,0,3920,8,16,0,0,3936,8,16,0,0,3952,8,16,0,0,3968,8,16,0,0,3984,8,16,0,0,4000,8,16,0,0,4016,8,16,0,0,4032,8,16,0,0,4048,8,16,0,0,4064,8,16,0,0,4080,8,16,0,0,};
 static rfbFontData default8x16Font = { default8x16FontData, default8x16FontMetaData };
+
+#endif