Prepends data to the beginning of the evbuffer
@param buf the evbuffer to which to prepend data @param data a pointer to the memory to prepend @param size the number of bytes to prepend @return 0 if successful, or -1 otherwise
See Implementation
Prepends data to the beginning of the evbuffer
@param buf the evbuffer to which to prepend data @param data a pointer to the memory to prepend @param size the number of bytes to prepend @return 0 if successful, or -1 otherwise