Read from a file descriptor and store the result in an evbuffer.
@param buffer the evbuffer to store the result
@param fd the file descriptor to read from
@param howmuch the number of bytes to be read
@return the number of bytes read, or -1 if an error occurred
@see evbuffer_write()
Read from a file descriptor and store the result in an evbuffer.
@param buffer the evbuffer to store the result @param fd the file descriptor to read from @param howmuch the number of bytes to be read @return the number of bytes read, or -1 if an error occurred @see evbuffer_write()