On Fri, Sep 21, 2012 at 09:25:43PM +0200, Julian Scheel wrote: > Hi, > > I wonder if there is a way to drain the internal buffer of a bufferevent? > Actually I use a bufferevent to write data into a socket. But it can happen > that the socket is not accepting data for a while, which obviously lets the > bufferevents internal buffer grow. Now I'd like to set a maximum buffer size, > so that I can ensure that even when the socket is blocked for a longer period > the application won't eat up all available memory. > I tried to do a evbuffer_drain on the evbuffer returned by > bufferevent_get_output(), but this simply seems to have no effect. The buffer > size remains unchanged, no matter how many bytes I try to drain out. > Is there any way to achieve what I want to do with libevent?
When you call evbuffer_drain() it doesn't free() resources, it basically just resets the pointer back to the start of the buffer. It sounds like you may want to keep a seperate evbuffer you allocate yourself, if something actually needs the data you can call bufferevent_write_buffer(bev, yourevbuffer). Otherwise you can keep track of how big it is, and if it gets too big for you, call evbuffer_free() and immediately allocate a new one. *********************************************************************** To unsubscribe, send an e-mail to majord...@freehaven.net with unsubscribe libevent-users in the body.
