v1.11

1.11 2024-08-11

• Command line option -C allows to specify a OpenBSD network
  pseudo device that is used. The header and packet length
  calculation is adopted to print correct statistic values.
• Rework starting remote udpbench via ssh. Pass pseudo device
  option also to the other side.
• Print bit per second in statistics with %e to get consistent
  output and proper alignment.

v1.10

1.10 2024-03-29

• Use pkgconf to build on GNU/Linux.

v1.09

1.09 2024-01-27

• Improve printing status line and explain it in man page.
• Measure final packet after receive timeout.
• Send and receive empty packet before initial delay.

v1.08

1.08 2023-07-07

• Repeat count is limited to 256.
• Adjust timeout documentation.

v1.07

1.07 2023-06-13

• All options are allowed on command line for both sides.
  This is needed as ssh udpbench sets all options now.
• Implement -d idle to set idle timeout via command line.
  Global receive timeout is adjusted by delay and idle.
• Implement -d delay to sleep before sending.
• Implement -N repeat to fork multiple udpbench processes.
• Revert idle timeout calculation. Check idle time every tenth
  of a second to make it more reliable.
• Call remote ssh udpbench with full set ot options.
• Option -m mmsglen value 0 explicitly turns multiple messages
  off.

v1.06

1.06 2023-06-05

• Create gpg signature .asc for released .tar.gz files.
• Lot of code cleanup and refactoring.
• Print warning if received packet is truncated or oversized.
• Recv timeout is increaed by 4 on the local side.
• Idle timeout is implemented as 1 second recv timeout.
• Print start and end time in status line.
• Print frames containng IP fragments in status lines.
• Timeout -t 0 disables timeout and runs forever.

v1.05

1.05 2022-10-04
- With option -m udpbench uses system calls sendmmsg(2) and
recvmmsg(2) instead of send(2) and recv(2).
- Add tests and documentation for mmsg feature.
- Improve recv idle time logic and document it in diagnostics.
- Document recv interrupted system call in diagnostics.

v1.04

1.04 2022-08-16
- Send hop-by-hop router alert IPv6 extension header with -H.
- Divert mode is only allowed for receiving.
Warning: Option -D for non remote send generates error.
- Sending packets does abort with EINTR anymore.

v1.03

1.03 2022-08-10
- Portable GNU makefile for Debian and Ubuntu.
- Fix calculation of frame length for full size IP packet.
- Delay sender with -B bitrate or -P packetrate.
Warning: -d delaypacket has been renamed.
- Print length of IP packets and Ether frames in status line.
Warning: Format of status line has changed.

v1.02

1.02 2022-08-01
- Option -D receives udp packets from divert raw socket.
- Add minimal test on localhost.
- Set progname to show if error is from send or recv process.
- Start ssh with -nT to avoid stopped background process.