2023-02-08 Jerry Lundström Release 2.11.0 A couple of new features this release courtesy of Petr Špaček @pspacek (ISC) and a bunch of bugfixes. First off `dnsperf` can now do verbose statistics during each interval when using `-S`, see long option `verbose-interval-stats`. Next is a new latency histogram output using data structures (hg64) created by Tony Finch @fanf2 (ISC), see long option `latency-histogram`. These will also be shown during `-S` when used together with `verbose-interval-stats`. Lastly a small change to boolean long options, they no longer require a value (`=yes`) to be enabled. Bugfixes: - Make sure the number of outstanding queries don't go negative, happens if queries are timed out before being sent - Fixed #208: - `recv_one()`: Fix handling errno, only store EAGAIN if no other error has been received - `do_recv()`: Don't break on error as it will count it as a received message - Treat `EBADF` as `EAGAIN` for stateful connections, receive thread might read from a closed socket if send thread is reconnecting - `dnsperf`: warn if -c, -T, -q, -Q values are auto-adjusted - Fixed #222: don't process unexpected message if the message is suppressed 14db835 Opt arg fb81481 Suppress unexpected 64b8c6d stats_t initialization 8290775 Fix first call to diff_stats 4f8bd24 Compile support histograms a9b4f04 External code, latency histograms d1f4b65 add detailed latency histograms 044e3a2 data structures for detailed latency histograms ad3fb03 Opt, verbose statistics 38bc936 Command usage warnings 9f31595 Bad file descriptor d3650eb Receive socket error handling 84c8e72 Negative outstanding e7df5e1 Clarify meaning of dnsperf -S output in the man page 830eb43 verbose interval stats for dnsperf 2022-11-11 Jerry Lundström Release 2.10.0 This release adds a binary datafile (DNS wire) format to `dnsperf` thanks to a contribution from Petr Špaček @pspacek (ISC). The new binary format greatly improves performance in some cases, for Petr's case it was testing dynamic updates. Switching to this pre-compiled DNS wire format increased QPS from 4k to 600k, an increase of 150 times throughput from `dnsperf`! See man-page for `-B` for more information and examples how to use. 5971cb9 Doc a241068 CodeQL 2a7d10a Fix CodeQL workflow 0ce15f6 Fix COPR 0ae4a54 CodeQL f52e4b1 wire format input c423aa9 wire format input 2b0693d Input binary format 2021-12-08 Jerry Lundström Release 2.9.0 This release brings a new message suppression option and a way to control how many queries are sent over a connection. You can now suppress the message about receiving unexpected DNS message IDs by using `-O suppress=unexpected`. With `-O num-queries-per-conn=` you can now limit the number of queries sent over a connection before triggering a re-connection, see the `dnsperf(3)` man-page for more information how this works. cd9df40 Tests 864a968 Queries per connection 7c5d6ab Suppress unexpected 8e9f4a2 Suppress 2021-11-02 Jerry Lundström Release 2.8.0 This release fixes response handling for DNS-over-HTTPS when multiple responses are received within the same receive cycle, and adds a new option to suppress some of the normal and verbose output. The network model within dnsperf and resperf can not process more then one response at a time from a protocol module, so a buffer has been added to the DNS-over-HTTPS module to handle this situation (this already exists in all other modules). The new option `-O suppress=` can selectively suppress parts of the normal and verbose output. Some of these messages might be excessively displayed due to the network model and depending on what protocol you use which makes usage harder then necessary. For example during TCP connection stage, if you end-point is slow to establish connection you will get a lot of output saying that the socket isn't ready yet. 6a452b0 DoH response handling e2828e7 Suppress 2021-09-17 Jerry Lundström Release 2.7.1 This release fixes issues with constructing wire-format DNS when the domain names includes escaped characters such as `\123` or `\.`. Other changes: - Bump Debian package compat level to 10 4873f02 DNS encoding c4eccc0 debhelper 2021-08-09 Jerry Lundström Release 2.7.0 This release adds DNS-over-HTTPS support! DNS-over-HTTPS can be used by specifying transport mode `doh` and you should also look at the dnsperf(1) man-page (or `-H`) for the extended options `doh-uri` and `doh-method`, which controls aspects of DoH/HTTP/2 that you might want to set. Other fixes: - Add check when constructing DNS packet so that total length of labels does not exceed 255 bytes - Fix connection/reconnection state handling for DoT transport - Fix event handling by initializing them directly when opening the sockets, otherwise events could have been missed which would give incorrect statistics 61b5eac Tests with dumdumd d71071c Tests with dumdumd b42f92e DoH sending 2fa40bb Net stats f7f8692 DoH fixes ea62b49 DoH concurrent streams 91929f1 DoH reconnect 17660e6 DoH fixes 5276aa6 resperf buckets 585860e Packages 3ffc601 Fixes 1570609 Man-page 6bcadc7 README f81adf1 Fixes 1acd71f Code structure 6c47876 Fixes 2d379f4 Fixes 4d5384b Fixes cee93b3 Initial DNS-over-HTTPS support implementation 4ff3ebc Events 8b24bbf DoT state 6a5b5ef Fix too long name 71fa09f long opts 2021-05-31 Jerry Lundström Release 2.6.0 This release adds EDNS options parameter `-E` to `resperf` and a script for generating EDNS Client Subnet options (see `contrib/ecs-gen`). d29d880 ECS opt 877f31e edns option 2021-03-25 Jerry Lundström Release 2.5.2 This release tweaks the reconnect code for TCP and DoT. For TCP, atomic operations are used to signal the need to reconnect from the receiving thread to the sending, as the sending is the one in charge of reconnecting. This speeds up detection of connection lost which reduces the amount of lost queries on a disconnect. This change does not affect DoT as much, as the SSL context shared between the threads are protected by a mutex. But a bug was found in `sendto()` for DoT that could drop a query if the socket was busy sending. The connect and reconnect socket events has been split into connecting, connected and reconnecting, reconnected. This is to report more correct reconnect events when it comes to DoT, because the connection can be lost while negotiating TLS. Lastly, additional tests has been added for the network code. d9e5663 net test 22f49df network tests 8e5b56e reconnect 2021-03-22 Jerry Lundström Release 2.5.1 This release re-adds support for TYPEnnn and ANY in the datafile, this was missed during the removal of the dependency on BINDs development libraries in v2.4.0. Also note that with v2.5.0, this software now depends on Concurrency Kit (ck) for atomic operations. 924e6ea ANY 0a444c0 TYPEnnn 2021-03-12 Jerry Lundström Release 2.5.0 This release adds re-connection support for TCP and DoT protocol, new options to `resperf` and fixes a few bugs. `dnsperf` and `resperf` will now try to re-connect when they lose a TCP or DoT connection, and with that comes a few new statistics metrics. For `dnsperf`, if a connection oriented protocol is used, it will now show the total number of re-connections made and the connection latency. For `resperf` it also shows the total number of re-connections made and the gnuplot data now contains the total number of connections made and the connection latency for each interval. Beside re-connection support, improvements have been made when it comes to tracking socket readiness while connections are established which should generate less warnings about "socket not ready". New `resperf` options: - `-R`: Reopen the datafile if it runs out of data before the testing is completed. This allows for long running tests on very small and simple query datafile. - `-F `: Sets the maximum number of queries that can fall behind being sent. `resperf` will stop when this many queries should have been sent and it can be relative easy to hit if `-m ` is set too high. The default is 1000 and setting it to zero (0) disables the check. Bugfixes: - Fixed port handling for host/network format when setting client side port with `-x` - Fix support for quoted characters, `\000` and `\.`, in domain names, this was lost when removing BIND's internal development libraries - Fix issue in `dnsperf`, it would loop forever if no connection could be established - Fix potential buffer overrun in `resperf` when using response id for `queries[]` - DoT: Fix bug when sending from buffer Other changes: - Always use `IPV6_V6ONLY` socket option for IPv6 - Add man-page on `-W` option added in v2.4.0 - Reformat man-pages - `resperf`: - Try and process more request each run to hopefully not hit max outstanding so easy when high QPS - Add default value to `-C` so it shows in help 9308361 man-page format 0e52fb4 man-page, opts, tuneups e36211d stats d9b9ba3 Response qid to index 2b2c37e fixes, reconnection acd31e5 dname quote de8f049 net 2021-02-23 Jerry Lundström Release 2.4.2 This release fixes a few issues with reading of the datafile which could lead to "ran out of data" errors. The problem was that reading from the datafile was done before finding a socket to send it on, or socket readyness, and that lead to progressing the queries without really doing anything. Another issues that's been fixed was that if the read lines perfectly aligned with the buffer, it would be treated like EOF and caused an exit. 9937287 resperf TLS 6736956 datafile 55faec6 ran out of data 2021-02-09 Jerry Lundström Release 2.4.1 This release fixes an issue with the socket readiness function that could cause a buffer overflow (`-T 10 -c 2000`) due to `select()` being limited to check 1023 sockets. `poll()` is now used which has no limit. There has also been a few fixes to the contrib script `queryparse` that has to do with python v2 and v3 compatibility and better exception handling. 24e5bee poll 7dceca7 Handle only common exceptions 5603294 Fix error on python3 48fa517 TSIG 2020-12-09 Jerry Lundström Release 2.4.0 This release removes the dependency on BIND's internal development libraries! This make building and packaging a lot easier and less troublesome in the future. This software now depends only on OpenSSL (for TSIG feature) with an optional depend on LDNS (for dynamic updates feature). New option: - Transport mode option `-m`/`-M` now recognizes `dot` alongside `tls` for encrypted DNS - Added `-W` for outputting warnings and errors to stdout Other changes / bugfixes: - Fix potential memory leak of query descriptions when using verbose - Only use TLS v1.2 and above for DoT/TLS - Add a lot of tests - Add coverage testing d17743b datafile 434bbf2 Checks, coverage, log, test IPv6 9fb305f Coverage 123ebf1 DOT, TLS version, Sonarcloud 26df0bd BIND dependency ee660e7 Sonarcloud c9ea0ab base64 4e9be82 TSIG 4275045 EDNS, https 7c3f51c BIND dependency 6e1be5d ISC dependencies e36f19d Buffer 485cdd2 ISC mem, tests 663dc24 Namespace clash 2c44987 dynamic updates, edns, headers 5d109b2 Disable HMAC 79cae93 datafile, query desc 663d814 net c867de6 isc_result_t 651ee5d opt 7d30804 isc_result_t 58ad313 ISC linked list 7b4da6d Info 8079ebc Tests e3fb685 Tests 2bb603a Tests 297b23b Test c4e244b Test 1caac35 Makefile e9f2aaa Coverage 27af853 Fix typo in configure.ac 521faa6 Badges 8fa2ec4 LGTM 75c89e5 COPR 2020-05-15 Jerry Lundström Release 2.3.4 This release adds a workaround, thanks to patch from Petr Menšík, for building on systems with BIND 9.16. Also improves error handling by using thread-safe `strerror_r()` instead of `strerror()`. 88c3ef4 strerror 1917f67 openSUSE Tumbleweed fd39641 AS_VAR_APPEND aeeef74 bind 9.16 07732cd BIND, libcrypto, clang format 08146e3 Add crypto library to checks e4307c2 Add checks to pass with BIND 9.16 3f9aed3 Prepare check for bind 9.11/9.16 return types 2020-05-06 Jerry Lundström Release 2.3.3 This release changes the behavior of `dnsperf` and `resperf` when it comes to TCP and TLS connections, and updates package building using COPR (thanks to patch from Petr Menšík (Red Hat)). Connection reset or close are now treated as "try again" so that the run is finished and not aborted. As SIGPIPE might be received on usage of closed connections it's now blocked in `dnsperf` and handled as a fatal action in `resperf`. 62885ad SIGPIPE 106c50e connection 3ef0899 README 61a3b1c COPR 35efa27 COPR 46b37a1 COPR 5c126ae COPR 1c51b76 Provide full URL in spec 2a4dd0e Allow recreation of source archive 931d6cc Do not require root for archive creation 2019-08-23 Jerry Lundström Release 2.3.2 This release fixes a buffer overflow when using TSIG and algorithms with digests larger then SHA256, reported by Mukund Sivaraman. Also fix build dependencies for `sqrt()`. e54aa58 Digest bca5d8d sqrt d9eaa5b Package 2019-07-24 Jerry Lundström Release 2.3.1 After a report and additional confirming results the use of `poll()` in the network receive code for TCP and TLS has been removed. This `poll()` initially gave better results while testing in a docker container on it's loopback interface but when on physical networks it reduced performance to 1/12th, so it had to go. Thanks to Brian Wellington (Akamai/Nominum) for the initial report and testing, and to Jan Hák (CZ.NIC) for testing and confirming the results. Bugfix: - Fix check for having more DNS messages in the receive buffer for TCP and TLS 670db9c TCP/TLS receive b8925b2 recvbuf have more 2019-07-17 Jerry Lundström Release 2.3.0 This release adds support for DNS over TCP and TLS which can be selected by using the mode option for `dnsperf` and `resperf`. The default server port used is now determined by the transport mode, udp/tcp port 53 and tls port 853. Note that the mode option is different between the program because it was already taken for `resperf`. `dnsperf` changes: - Add `-m` for setting transport mode, `udp` (default), `tcp` or `tls` - Add verbose messages about network readiness and congestion `resperf` changes: - Add `-M` for setting transport mode, `udp` (default), `tcp` or `tls` - Add `-v` for verbose mode to report about network readiness and congestion ffa49cf LGTM, SonarCloud 4cd5441 TLS 35624d1 TCP send, socket ready loop fbf76aa TCP support 5988b06 Funding 2019-01-28 Jerry Lundström Release 2.2.1 The commit pulled from a fork that used `inttypes.h`, instead of ISC internal types, missed to remove the old conversion specifier. This was reported and fixed by Vladimír Čunát. 9534ce1 remove visible "u" characters after numbers 2019-01-25 Jerry Lundström Release 2.2.0 First release by DNS-OARC with a rework of the code to use autotools, semantic versioning 2.0 and bugfixes pulled from other's forks. Bugfixes: - Fix infinite loop in argument parsing - Fix min/max latency summing for multithreaded runs - Fix calculation of per_thread socket counts - Fixes to queryparse - Mark correctly end of file - Support python3 - Stop looping on end of file undefinitely - Fix compilation issues and work around missing `dns_fixedname_initname()` - Clang `scan-build` fixes Other changes: - add "configure --with-bind" option - Handle bind library changes to HMAC (see #22) and other differences between versions - Workaround issue on FreeBSD (see #23) - Use `snprintf()` and OpenBSD's `strlcat()` - Add/update build dependencies for Debia, Ubuntu, CentOS, FreeBSD and OpenBSD ae9bc91 Clang format b9bb085 CI, buildbot b84e41b Autotools, README, changelog a2e1732 License 9dcb661 Remove $Id markers, Principal Author and Reviewed tags from the full source tree 0677bf0 Use dns_fixedname_initname() where possible d8d4696 [master] add "configure --with-bind" option to dnsperf b71a280 Add deb based distros dependencies 439c614 Replace custom isc_boolean_t with C standard bool type 407ae7c Replace custom isc_u?intNN_t types with C99 u?intNN_t types c27afd4 Replace ISC_PRINT_QUADFORMAT with inttypes.h format constants 6fdb2f7 Fix queryparse 4909b78 README 2782d50 README.md: Rectify link to software e31ddf4 fix calculation of per_thread socket counts 3bd7fb4 Fix min/max latency summing for multithreaded runs 2207e27 Fix infinite loop in argument parsing. 3bfe97a Include the github URL; remove the bug reports section. 0cee04a Add note about bug reports. 62c4b32 add .gitignore c45f0be Initial import. 149172b Initial commit 2015-12-15 Release 2.1.0.0 In addition to various bug fixes, the following new capabilities were added in this release: - The `-C` option was added to `resperf`. This option enables the local server to act as multiple clients. By default, the local server acts as a single client. - the `-T` option was added to `dnsperf`. This option separates the number of clients from the number of threads and allows more clients to be simulated effectively. Note that using this option impacts CPU and memory, so we recommend limiting the number of threads. 2012-03-01 Release 2.0.0.0 In the `dnsperf` command, the following changes occurred: - The socket buffer size is no longer set to 32 kilobytes by default. - A new `-c clients` option was added to enable the server to act as multiple clients. Each client uses the same source IP address with a unique source port. Use the `clients` argument to specify the number of clients represented by the server. We recommend limiting the number of clients represented by the server because the `dnsperf` process uses two threads for each client (one thread for sent packets and one for received packets), which impacts CPU and memory. - Example query files are no longer included with the `dnsperf` program. Nominum provides a sample query file that is available for download at: ftp://ftp.nominum.com/pub/nominum/dnsperf/data/ - Latency reporting improved. When the `-v` (verbose mode) option is configured with the `dnsperf` command, the command output now includes latency measurements and the DNS RCODE of each response. This enables users to create their own latency graphs. - Performance was enhanced on modern operating systems so that faster name servers can be tested. - The `dnsperf` command output is enhanced to display more information in a compact format. The following options were removed from the `dnsperf` command: - The `-A` option for displaying command line arguments passed to the `dnsperf` tool in the final statistics output. Now, the `dnsperf` command output always displays command line arguments. - The `-T` option for printing a histogram showing response latency after completing a test run. Now, the `-v` option enables users to include latency measurements in the `dnsperf` command output. - The `-H` option for configuring the number of buckets for which response latency is displayed. Now, the `-v` option enables users to include latency measurements in the `dnsperf` command output. - The `-1` option for configuring the `dnsperf` tool to run through the input file exactly one time. (Now, you use the `-n 1` option to configure the `dnsperf` tool to run through the input file one time.) - The `-c` option for including the number of responses received (for each DNS RCODE) in the final statistics output. Now, DNS RCODE responses are always reported. In the `resperf` command, the following changes occurred: - The socket buffer size is no longer set to 32 kilobytes by default. - The `-A` option, which displayed command line arguments passed to the `resperf` tool in the final statistics output, was removed. Now, the `resperf` command output always displays command line arguments. 2011-12-22 Release 1.0.2.0 This release adds support for RHEL6-64 and for Solaris 10 x86-64. Some new configuration options have been added. You can now specify: - the local port from which to send requests - the local address from which to send requests - the maximum number of runs through the input file, up to the timeout limit. - when using TSIG, algorithms other than hmac-md5 can be used. One default has been changed: - The maximum number of outstanding requests now defaults to 100. A new example query file for IPv6, `queryfile-example-ipv6`, is now included with the distribution. 2008-01-10 Release 1.0.1.0 This release makes binary builds of `dnsperf` available in addition to the source code version previously released. This release of `dnsperf` includes a sample query file containing 100,000 queries to help with performance testing. This query file is useful for checking latencies or a continuous `dnsperf` run. In the binary distribution, this file is found at: /usr/local/nom/examples/dnsperf/queryfile-example-100thousand In the source distribution, it is at: ./examples/queryfile-example-100thousand where `.` is the directory made by extracting the source tarball. Nominum recommends using a query file with at least 3 million queries for a full `resperf` run as described in the man page; we make such a file available for download at: ftp://ftp.nominum.com/pub/nominum/dnsperf/data/queryfile-example-3million.gz The following fix is included in the source distribution: - 20996: `makefile.in` does not allow overriding `mandir` The `--mandir` argument to `configure`, which allows the user to specify the location man pages are installed, was incorrectly ignored. `queryparse` is a contributed program available in the source distribution of `dnsperf`. It can be found at `contrib/queryparse/`. The following changes were made to that program: - 19717: `contrib/queryparse` includes outgoing queries The `queryparse` script had no way of distinguishing between incoming queries and outgoing queries when applied to a traffic trace from a caching server. This was addressed by adding a new flag (`-r`) that, when included in the command line, will keep queries with `RD=0`. Otherwise, it will default to discarding them. - The ability to parse responses instead of queries was added. - A check was added to avoid short packets. - Logic was added to detect link type and correctly set the initial offset to handle both Ethernet and Cisco HDLC frames. - `queryparse` now uses `pcapy` instead of the `btk` python `libcap` module. Note that announcements of new releases of `dnsperf` are sent to the mailing list: dnsperf-announce@nominum.com. To be added to the mailing list, send a message to dnsperf-announce-request@nominum.com with "subscribe" as the subject. Known Issues: - None. 2006-12-21 Release 1.0.0.1 This release addresses the following issue in the `dnsperf` program: - 18838/18782: `dnsperf` slow down issue Because of an error in how timeout checking was being done, queries were rarely timing out, so the number of valid queries in flight kept dropping. This error has been corrected.