diff -r 66442f81f823 -r c7f5b062e622 src/server/util/io.h
--- a/src/server/util/io.h	Sat May 11 13:28:26 2013 +0200
+++ b/src/server/util/io.h	Wed May 22 13:27:31 2013 +0200
@@ -38,11 +38,13 @@
 typedef struct io_stream IOStream;
 
 typedef ssize_t(*io_write_f)(IOStream *, void *, size_t);
+typedef ssize_t(*io_writev_f)(IOStream *, struct iovec *, int);
 typedef ssize_t(*io_read_f)(IOStream *, void *, size_t);
 typedef ssize_t(*io_sendfile_f)(IOStream *, sendfiledata *);
 
 struct io_stream {
     io_write_f    write;
+    io_writev_f   writev;
     io_read_f     read;
     io_sendfile_f sendfile;
 };
@@ -80,12 +82,14 @@
 IOStream* stream_new_from_fd(pool_handle_t *pool, int fd);
 
 ssize_t system_write(IOStream *st, void *buf, size_t nbytes);
+ssize_t system_writev(IOStream *st, struct iovec *iovec, int iovcnt);
 ssize_t system_read(IOStream *st, void *buf, size_t nbytes);
 
 /* net stream */
 IOStream* net_stream_from_fd(pool_handle_t *pool, int fd);
 
 ssize_t net_stream_write(IOStream *st, void *buf, size_t nbytes);
+ssize_t net_stream_writev(IOStream *st, struct iovec *iovec, int iovcnt);
 ssize_t net_stream_read(IOStream *st, void *buf, size_t nbytes);
 ssize_t net_stream_sendfile(IOStream *st, sendfiledata *sfd);