fix compiling error on windows
update log
update log module
rename customized type
template
update log module
update logging
add generic request model
add skeleton of http proxy request
add trace log level
update existing logging
add request, but still has errors
move templates definition to header files, to pass compilation
remove template declaration and definition
add request dispatcher
move template function to header file to make the program pass compilation
implement the http proxy model
update header's definition, make it more comfortable for request parsing
add implementation of request parsing
almost completed http proxy