diff --git a/common/utility.hpp b/common/utility.hpp
index 575272e..85be83e 100644
--- a/common/utility.hpp
+++ b/common/utility.hpp
@@ -3,6 +3,8 @@
 #include <stdio.h>
 #include <limits>
 #include <cmath>
+#include <filesystem>
+#include <sys/statvfs.h>
 #include <common/string.hpp>
 
 class Utility
@@ -16,6 +18,7 @@ class Utility
     static bool fmod(double dividend,double divisor);
     static bool fmod(double dividend, double divisor,double epsilon);
     static String byteCountToString(double bytesTransferred, bool perSecond = true);
+    static size_t getAvailableDiskSpace(const String &path);
   private:
     static String pad(String theString,char padChar,int toLength);
     static String addCommas(String& theString);
@@ -172,4 +175,23 @@ bool Utility::fmod(double dividend, double divisor)
     // Check if the absolute remainder is less than epsilon
     return std::fabs(remainder) < epsilon;
 }
+
+// inline
+// size_t Utility::getAvailableDiskSpace(const String& path)
+// {
+//     struct statvfs stat;
+//     if (::statvfs(path, &stat) != 0)
+//     {
+//       throw new Exception("Error calling statvfs to get available disk space.");
+//     }
+//     // Calculate available space in bytes.  Multiply Number of free inodes * Fragment size
+//     return (size_t)stat.f_bavail * stat.f_frsize;
+// }
+
+inline
+size_t Utility::getAvailableDiskSpace(const String& path)
+{
+    std::filesystem::space_info si = std::filesystem::space(path.str());
+    return si.available;
+}
 #endif
\ No newline at end of file
diff --git a/sstp/.vscode/settings.json b/sstp/.vscode/settings.json
index f46726b..24036bd 100644
--- a/sstp/.vscode/settings.json
+++ b/sstp/.vscode/settings.json
@@ -53,6 +53,8 @@
         "stop_token": "cpp",
         "thread": "cpp",
         "*.tpp": "cpp",
-        "csignal": "cpp"
+        "csignal": "cpp",
+        "codecvt": "cpp",
+        "iomanip": "cpp"
     }
 }
\ No newline at end of file
diff --git a/sstp/main.cpp b/sstp/main.cpp
index 40956b4..5f0e009 100644
--- a/sstp/main.cpp
+++ b/sstp/main.cpp
@@ -15,8 +15,6 @@ void signalHandler(int signal);               // The Control-C handler
 
 SmartPointer<SSTP> sstp;
 
-// ****************************************************************************************************************************************************************
-
 /// @brief 
 /// @param argc 
 /// @param argv [0] program. [1] SERVERMODE {port} [2] CLIENTMODE {serveripaddress} {serverport} SEND {FileName}
@@ -25,7 +23,7 @@ int main(int argc, char **argv)
 {
   int returnCode(0);
   Profiler profiler;
-  String version = "0.1.0.4";   // major version, minor version, patch, build
+  String version = "0.1.0.5";   // major version, minor version, patch, build
 
   std::cout << "sstp version " << version.str() << std::endl;  
   if(!registerSignalHandler())
diff --git a/sstp/socketconnectionreceiver.cpp b/sstp/socketconnectionreceiver.cpp
index 0d395c8..380ac9f 100644
--- a/sstp/socketconnectionreceiver.cpp
+++ b/sstp/socketconnectionreceiver.cpp
@@ -94,10 +94,20 @@ bool SocketConnectionReceiver::handlePut(Block<String> &commands)
   size_t fileLength;
   size_t totalBytesRead=0;
   size_t totalPacketsRead=0;
+  size_t availableDiskSpace=0;
 
   fileName = commands[1];
   fileLength = commands[commands.size()-1].toLong();
-  std::cout << "PUT" << " " << fileName << " " << fileLength << std::endl;
+  std::cout << "PUT" << " " << fileName << " " << Utility::byteCountToString(fileLength) << std::endl;
+
+  availableDiskSpace=Utility::getAvailableDiskSpace(String("./"));
+  std::cout << Utility::byteCountToString(availableDiskSpace,false) << " available space on disk" << std::endl;
+  if(fileLength > availableDiskSpace)
+  {
+    std::cout << "Unsufficient space on disk.  Required space " << Utility::byteCountToString(availableDiskSpace,false) << " , available space" << Utility::byteCountToString(availableDiskSpace,false) << std::endl;
+    return false;
+  }
+
   FileIO writeFile(fileName, FileIO::ByteOrder::LittleEndian, FileIO::Mode::ReadWrite,FileIO::CreationFlags::CreateAlways);
 
   if(!writeFile.isOkay())