Release engineering updates and version bumps for iperf-3.19.

Author: bmah888

RELNOTES.md

@@ -1,6 +1,51 @@
 iperf3 Release Notes
 ====================
 
+iperf-3.19 2025-05-16
+---------------------
+
+* Notable user-visible changes
+
+    * iperf3 now supports the use of Multi-Path TCP (MPTCPv1) on Linux
+      with the use of the `--multipath` flag. (PR #1661)
+
+    * iperf3 now supports a `--cntl-ka` option to enable TCP keepalives
+      on the control connection. (#812, #835, PR #1423)
+
+    * iperf3 now supports the `MSG_TRUNC` receive option, specified by
+      the `--skip-rx-copy`. This theoretically improves the rated
+      throughput of tests at high bitrates by not delivering network
+      payload data to userspace. (#1678, PR #1717)
+
+    * A bug that caused the bitrate setting to be ignored when bursts
+      are set, has been fixed. (#1773, #1820, PR #1821, PR #1848)
+
+    * The congestion control protocol setting, if used, is now
+      properly reset between tests. (PR #1812)
+
+    * iperf3 now exits with a non-error 0 exit code if exiting via a
+      `SIGTERM`, `SIGHUP`, or `SIGINT`. (#1009, PR# 1829)
+
+    * The current behavior of iperf3 with respect to the `-n` and `-k`
+      options is now documented as correct. (#1768, #1775, #596, PR #1800)
+
+* Notable developer-visible changes
+
+    * iperf3 now supports a callback function to get the JSON output
+      strings. (#1711, PR #1798)
+
+    * iperf3 now builds correctly with gcc-15 (#1838, PR #1805)
+
+    * Various memory leaks were fixed (#1881, PR#1823, #1814, PR#1822)
+
+    * A potential segfault crash was fixed (#1807)
+
+    * Improved warning messages when reading malformed JSON messages
+      (PR #1817)
+
+    * The Github CI configuration was changed to use a more up-to-date
+      set of runners (PR #1864)
+
 iperf-3.18 2024-12-13
 ---------------------
 

configure.ac

@@ -1,4 +1,4 @@
-# iperf, Copyright (c) 2014-2024, The Regents of the University of
+# iperf, Copyright (c) 2014-2025, The Regents of the University of
 # California, through Lawrence Berkeley National Laboratory (subject
 # to receipt of any required approvals from the U.S. Dept. of
 # Energy).  All rights reserved.
@@ -25,7 +25,7 @@
 
 # Initialize the autoconf system for the specified tool, version and mailing list
 AC_PREREQ([2.71])
-AC_INIT([iperf],[3.18+],[https://github.com/esnet/iperf],[iperf],[https://software.es.net/iperf/])
+AC_INIT([iperf],[3.19],[https://github.com/esnet/iperf],[iperf],[https://software.es.net/iperf/])
 m4_include([config/ax_check_openssl.m4])
 m4_include([config/ax_pthread.m4])
 m4_include([config/iperf_config_static_bin.m4])