build on Windows

I checkout the source code from master and offen the .sln file in visual studio community 2017. I build the source code. But there is many errors, e. g. sys/socket.h, sys/time.h netinet/in.h, pthread.h no such file or drectory. sys/time.h etc seems for Linux. I corrected these errors and install vcpkg, Then there are also other errors.