Support --logfile argument to make all output go to a file.

This works for both client and server side (in the case of the server,
either for daemon or non-daemon mode).

Consistifies a few places that were using printf instead of iprintf.

Fixes Issue 119.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/iperf.h b/src/iperf.h
index 188f06a..22037df 100644
--- a/src/iperf.h
+++ b/src/iperf.h
@@ -174,6 +174,9 @@ struct iperf_test
     char     *congestion;			/* -C option */
     char     *pidfile;				/* -P option */
 
+    char     *logfile;				/* --logfile option */
+    FILE     *outfile;
+
     int       ctrl_sck;
     int       listener;
     int       prot_listener;