h2load has supported uploading a file quite a while, but it turns out
that it worked with HTTP/2 and SPDY only. HTTP/1 with upload did not
work. This commit fixes this bug, and implement HTTP/1 upload. Due
to architectural limitation of h2load, when -d option is used, the
number of in-flight pipe-lined requests is set to 1.
Previously, we use evbuffer_pullup(buf, -1) to linearize the memory
region and it may cause buffer copy. To avoid this, we use the return
value of evbuffer_get_contiguous_space() as 2nd parameter. According
to the libevent manual, by doing so evbuffer_pullup() will not copy or
modify any data in evbuffer.
Supplying multiple URIs can simulate more real life situation on
server side. For example, we can supply URIs of html, css and js and
benchmark the server. The -m option is updated so that it defaults to
the number of supplied URIs.
The profiler and benchmarking showed that calling evbuffer_add()
repeatedly is very costly. To avoid this, we buffer up small writes
into one large chunk and call evbuffer_add() less times.
Tatsuhiro Tsujikawa
Alex Nalivko