Commit graph

12324 commits

Author SHA1 Message Date
Robert Müller 2c0acb4590 Remove obsolete set_console_msg_color function declaration 2023-01-06 20:28:38 +01:00
Jupeyy fda0f5a29d Add error handling when enumerating physical devices 2023-01-06 15:11:46 +01:00
Dennis Felsing 6a13008147 Update translations for upcoming 16.7 2023-01-05 09:39:34 +01:00
bors[bot] c7192d703e
Merge #6226 #6230
6226: Remove projectiles on save and load r=def- a=Zwelf

Restructured CSaveTeam a bit, because I also needed access to CGameWorld. I don't store pointer to IGameController in CSaveTeam anymore, because we pass CSaveTeam to the database thread. If it would be accessed there, it could cause a race conditions.

## Checklist

- [x] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [x] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


6230: For integrated and discrete GPUs always prefer what comes first in the list r=def- a=Jupeyy

fixes #6200

## Checklist

- [ ] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: Zwelf <zwelf@strct.cc>
Co-authored-by: Jupeyy <jupjopjap@gmail.com>
2023-01-04 18:03:11 +00:00
Jupeyy 7ca20a5873 For integrated and discrete GPUs always prefer what comes first in the list 2023-01-04 18:25:35 +01:00
Jupeyy a077c01b80 Less translations for vk errors from backend 2023-01-04 18:19:53 +01:00
bors[bot] f3fca968f1
Merge #6158
6158: Add F-DDrace gametype color r=def- a=fokkonaut

Been using this color already since a while. I'd like to keep it.

![image](https://user-images.githubusercontent.com/35420825/208289135-e8f5ba01-f487-47f2-929c-f1029ddfbab5.png)
![image](https://user-images.githubusercontent.com/35420825/208289140-2b807ef3-4b0f-4917-9485-c47977d95aa2.png)


## Checklist

- [ ] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: fokkonaut <35420825+fokkonaut@users.noreply.github.com>
2023-01-04 10:26:06 +00:00
Robert Müller 21636912c0 Refactor team state unpacking 2023-01-03 23:55:26 +01:00
Zwelf 73b5d885fa Remove projectiles on save and load
Restructured CSaveTeam a bit, because I also needed access to CGameWorld. I don't store pointer to IGameController in CSaveTeam anymore, because we pass CSaveTeam to the database thread. If it would be accessed there, it could cause a race conditions.
2023-01-03 23:38:58 +01:00
Robert Müller dfe0ec3385 Restart client race demo when round is restarted 2023-01-03 23:38:37 +01:00
Robert Müller dd4e2d615b Send updated teams state to clients after resetting round 2023-01-03 22:40:03 +01:00
bors[bot] 6d3af742dd
Merge #6180
6180: Implement exact matches in search and exclude strings r=Robyt3 a=def-

Thanks to bencie for discussion

<!-- What is the motivation for the changes of this pull request? -->

<!-- Note that builds and other checks will be run for your change. Don't feel intimidated by failures in some of the checks. If you can't resolve them yourself, experienced devs can also resolve them before merging your pull request. -->

## Checklist

- [x] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: Dennis Felsing <dennis@felsin9.de>
2023-01-03 18:16:03 +00:00
bors[bot] b36726bbca
Merge #6156
6156: Swap times should be per player, not per team (fixes #6155) r=Learath2 a=def-

<!-- What is the motivation for the changes of this pull request? -->

<!-- Note that builds and other checks will be run for your change. Don't feel intimidated by failures in some of the checks. If you can't resolve them yourself, experienced devs can also resolve them before merging your pull request. -->

## Checklist

- [x] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: def <dennis@felsin9.de>
2023-01-03 15:59:25 +00:00
Robert Müller 9ea665cd69 Fix undefined demo timeline markers when recording is not stopped
When the demo recording is not stopped properly (e.g. client crashes during recording), the timeline markers and the demo length are not updated.
The length is always set to zero when starting the recording, but uninitialized memory is written for the timeline markers, which causes these demos to likely show the maximum number of markers with some markers possibly being outside the ticks that the demo contains.
This is fixed by initially setting all timeline marker data to zero when starting the recording.
2023-01-03 15:38:54 +01:00
Robert Müller c2c21298e2 Fix signed integer overflow on client input message
Swap mathematical operations to avoid multiplication by `1000`. As `time_freq()` returns the nanoseconds in a second (1e9), first dividing this number by 1000 does not lose any precision.

Also ensure that `IntendedTick` is in the valid range of ticks.

```
src/engine/server/server.cpp:1585:64: runtime error: signed integer overflow: 24185120014282423 * 1000 cannot be represented in type 'long int'
    0 0x55c165f220aa in CServer::ProcessClientPacket(CNetChunk*) src/engine/server/server.cpp:1579
    1 0x55c165f3a8d3 in CServer::PumpNetwork(bool) src/engine/server/server.cpp:2383
    2 0x55c165f51166 in CServer::Run() src/engine/server/server.cpp:2821
    3 0x55c165eb37d0 in main src/engine/server/main.cpp:191
    4 0x7f99e4c3ad8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
    5 0x7f99e4c3ae3f in __libc_start_main_impl ../csu/libc-start.c:392
    6 0x55c165e7ab64 in _start (build-asan/DDNet-Server+0xd7ab64)
```
2023-01-03 14:10:58 +01:00
Robert Müller 706eb0d015 Remove unnecessary include in protocol, move definitions to cpp file
The include of `base/system.h` in `src/engine/shared/protocol.h` is not required and only used transitively in `teamscore.h` for `dbg_assert`.

To avoid adding back the include in `teamscore.h`, the function definitions are moved to the cpp file. Both definitions are moved for consistency.
2023-01-03 14:10:58 +01:00
Robert Müller e4b1db1b6d Fix spelling of NETMSG_AUTH_CHALLENGE constant 2023-01-03 14:10:57 +01:00
Robert Müller 25e01eb762 Add constants for minimum and maximum tick values 2023-01-03 14:10:57 +01:00
bors[bot] 29bf49ae31
Merge #6217
6217: Register application separately to specify its displayed name r=def- a=Robyt3

Follow-up from #6199.

Adding version information to the executable (#6203) doesn't result in the name being shown in the Windows settings. There is a separate registry key where applications can register a readable name.

See: https://learn.microsoft.com/en-us/windows/win32/shell/app-registration

## Checklist

- [X] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: Robert Müller <robytemueller@gmail.com>
2023-01-02 21:55:37 +00:00
Chairn 8b3dfaf2d0 Add some more test to str_comp_filenames and restore old behavior 2023-01-02 21:20:49 +01:00
Robert Müller 179e3b1c4c Register application separately to specify its displayed name
The application itself must also be registered in a separate registry key, so its displayed name can be set.

See: https://learn.microsoft.com/en-us/windows/win32/shell/app-registration
2023-01-02 17:35:16 +01:00
Robert Müller 6e28ca6fe4 Extract method IStorage::GetBinaryPathAbsolute 2023-01-02 15:29:43 +01:00
Robert Müller a0df1ebfc0 Fix updated not being set correctly when deleting shell class 2023-01-02 15:29:43 +01:00
Robert Müller f3eeddf8bd Fix some registry keys not being closed if values are unchanged 2023-01-02 15:29:42 +01:00
bors[bot] 5282c8e2e5
Merge #6216
6216: Follow-up fix to scoreboard showing wrong best time r=Zwelf a=def-

Forgot the call in constructor in https://github.com/ddnet/ddnet/pull/6213/

Thus best time was not displayed initially. Thanks to spur for report

<!-- What is the motivation for the changes of this pull request? -->

<!-- Note that builds and other checks will be run for your change. Don't feel intimidated by failures in some of the checks. If you can't resolve them yourself, experienced devs can also resolve them before merging your pull request. -->

## Checklist

- [x] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: def <dennis@felsin9.de>
2023-01-02 13:24:07 +00:00
bors[bot] b252f2e344
Merge #6199
6199: Register protocol and file extensions on client launch on Windows r=def- a=Robyt3

When launching the client on Windows, associate the protocol `ddnet` and the file extensions `.map` and `.demo` with the client executable.

See #6072.

## Checklist

- [X] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: Robert Müller <robytemueller@gmail.com>
2023-01-02 12:58:15 +00:00
bors[bot] 5b13379d94
Merge #6202
6202: Add tool to manually ping the mastersrv r=def- a=heinrich5991

Usage example: `masterping ipv6
https://master1.ddnet.org/ddnet/15/register`.

Returns 0 on success, nonzero on failure. Note that this might report failure occasionally as it doesn't retry, UDP packets are non-reliable so they might not arrive even though the mastersrv is up.

## Checklist

- [x] Tested the change ~~ingame~~
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: heinrich5991 <heinrich5991@gmail.com>
2023-01-02 12:32:21 +00:00
def 2a48533aa5 Follow-up fix to scoreboard showing wrong best time
Forgot the call in constructor in https://github.com/ddnet/ddnet/pull/6213/

Thus best time was not displayed initially. Thanks to spur for report
2023-01-02 12:29:11 +01:00
bors[bot] f0d2b9ab69
Merge #6213
6213: Fix scoreboard showing wrong best time r=Zwelf a=def-

by requesting the best time again when it initially failed. This is still not perfectly accurate since a player on another server can get a better time, which will not get updated when the current server had no database problems.

As reported by thekid36 on Discord:

> The best time shown on the scoreboard on the turkish server on a
> ddmax.Next map (mapname: 42) is 30min..while the best time should be 4
> min (it's correct on ger2 server)

So the way it works is that the best time is loaded from database when loading map. Additionally it gets updated when a new finish is done. If the initial load failed, but a finish with 30 min is done on the server, we get this result

<!-- What is the motivation for the changes of this pull request? -->

<!-- Note that builds and other checks will be run for your change. Don't feel intimidated by failures in some of the checks. If you can't resolve them yourself, experienced devs can also resolve them before merging your pull request. -->

## Checklist

- [ ] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: def <dennis@felsin9.de>
2023-01-01 14:36:38 +00:00
def 25e371fa8a Don't load best time when already in progress 2023-01-01 12:18:29 +01:00
def 8452d8d028 Don't duplicate type in same line 2022-12-31 13:04:21 +01:00
def 694b9cd67d Fix scoreboard showing wrong best time
by requesting the best time again when it initially failed. This is
still not perfectly accurate since a player on another server can get a
better time, which will not get updated when the current server had no
database problems.

As reported by thekid36 on Discord:

> The best time shown on the scoreboard on the turkish server on a
> ddmax.Next map (mapname: 42) is 30min..while the best time should be 4
> min (it's correct on ger2 server)

So the way it works is that the best time is loaded from database when
loading map. Additionally it gets updated when a new finish is done. If
the initial load failed, but a finish with 30 min is done on the server,
we get this result
2022-12-31 12:36:03 +01:00
Robert Müller 4118074768 Fix signed integer overflow when unpacking snapshot delta
```
src/engine/shared/snapshot.cpp:219:18: runtime error: signed integer overflow: -2011501152 + -1594687485 cannot be represented in type 'int'
    0 0x5593cbc3534c in CSnapshotDelta::UndiffItem(int const*, int*, int*, int, int*) src/engine/shared/snapshot.cpp:219
    1 0x5593cbc3852d in CSnapshotDelta::UnpackDelta(CSnapshot*, CSnapshot*, void const*, int) src/engine/shared/snapshot.cpp:442
    2 0x5593cbb881a6 in CDemoPlayer::DoTick() src/engine/shared/demo.cpp:624
    3 0x5593cbb9a907 in CDemoPlayer::Update(bool) src/engine/shared/demo.cpp:1016
    4 0x5593ca9f44da in CClient::Update() src/engine/client/client.cpp:2628
    5 0x5593caa199dd in CClient::Run() src/engine/client/client.cpp:3220
    6 0x5593caa970f3 in main src/engine/client/client.cpp:4717
    7 0x7fe086d04d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
    8 0x7fe086d04e3f in __libc_start_main_impl ../csu/libc-start.c:392
    9 0x5593ca55e6f4 in _start (build-demofuzz/DDNet+0x24936f4)
```
2022-12-31 12:06:31 +01:00
Robert Müller d63a7a3c84 Fix left shift of negative value when unpacking snapshot delta
```
src/engine/shared/snapshot.cpp:693:28: runtime error: left shift of negative value -1
    0 0x55cae1608071 in CSnapshotBuilder::NewItem(int, int, int) src/engine/shared/snapshot.cpp:686
    1 0x55cae1603fe0 in CSnapshotDelta::UnpackDelta(CSnapshot*, CSnapshot*, void const*, int) src/engine/shared/snapshot.cpp:390
    2 0x55cae15544c6 in CDemoPlayer::DoTick() src/engine/shared/demo.cpp:624
    3 0x55cae1566c27 in CDemoPlayer::Update(bool) src/engine/shared/demo.cpp:1016
    4 0x55cae03c07fa in CClient::Update() src/engine/client/client.cpp:2628
    5 0x55cae03e5cfd in CClient::Run() src/engine/client/client.cpp:3220
    6 0x55cae0463413 in main src/engine/client/client.cpp:4717
    7 0x7fbc7d855d8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
    8 0x7fbc7d855e3f in __libc_start_main_impl ../csu/libc-start.c:392
    9 0x55cadff2aa14 in _start (build-demofuzz/DDNet+0x2493a14)
```
2022-12-31 12:06:31 +01:00
bors[bot] 21b3b3b098
Merge #6207
6207: Run C++ unit tests with sanitizers (fixes #6205) r=Chairn a=def-

<!-- What is the motivation for the changes of this pull request? -->

<!-- Note that builds and other checks will be run for your change. Don't feel intimidated by failures in some of the checks. If you can't resolve them yourself, experienced devs can also resolve them before merging your pull request. -->

## Checklist

- [ ] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [ ] Written a unit test (especially base/) or added coverage to integration test
- [ ] Considered possible null pointers and out of bounds array indexing
- [ ] Changed no physics that affect existing maps
- [ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: def <dennis@felsin9.de>
2022-12-30 23:28:17 +00:00
def c6339055b7 Address comment from https://github.com/ddnet/ddnet/pull/6206/
@Chairn
2022-12-31 00:16:30 +01:00
def 6691be1d90 Run unit tests with sanitizers (fixes #6205)
Also fix memory leak in Net.Ipv4AndIpv6Work

Rust tests fail to link when building in san directory, works in source
directory.
2022-12-30 23:35:22 +01:00
bors[bot] beae6b8a6b
Merge #6206
6206: Remove possible overflow in str_comp_filenames (fixes #6204) r=def- a=Chairn


## Checklist

- [ ] Tested the change ingame
- [ ] Provided screenshots if it is a visual change
- [ ] Tested in combination with possibly related configuration options
- [x] Written a unit test (especially base/) or added coverage to integration test
- [x] Considered possible null pointers and out of bounds array indexing
- [x] Changed no physics that affect existing maps
- [x] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--undefinedbehavioursanitizer-or-valgrinds-memcheck) (optional)


Co-authored-by: Chairn <chairn.nq@hotmail.fr>
2022-12-30 21:25:03 +00:00
Robert Müller 6800bd90a4 Fix edge cases where demo tick seeking did not work
Instead of using hardcoded tick offsets, use the current/previous/next tick values from the demo info.

This fixes seeking the next tick not working for demos where the difference between the current and the next tick was greater than 3.
2022-12-30 21:05:46 +01:00
Zwelf e3147ce53d Simplify ninja code
Reasoning this change is correct:

* `OldPos` is set to `m_Pos` in line 260
* `m_Pos` is not modified in between line 260 and 272 (only `m_Core.m_Pos` gets modified)
* Therefore line 269 `Dir = m_Pos - OldPos` is always `vec2(0.0, 0.0)`.
* And line 271 `Center = OldPos + Dir * 0.5 = OldPos`.

So we can pass `OldPos` to `FindEntities` in line 272. Using `OldPos` here instead of `m_Pos` makes it clear, that we use the position before the move, even though `m_Pos` also still holds the old value.
2022-12-30 18:23:26 +01:00
Robert Müller a3e48bef27 Prevent temporary demo file from being deleted multiple times
Each time the client disconnected or stopped a demo, it tried to delete the previous temporary replay file, which causes an error message "could not delete file" to be shown in the console.

This is prevented by clearing the current filename of the demo recorder after deleting the file.
2022-12-30 14:20:42 +01:00
Chairn 2847d0f6d0 Added some test cases that were failing under new version 2022-12-30 01:11:57 +01:00
Chairn ed58668931 Remove possible overflow in str_comp_filenames (fixes #6204) 2022-12-30 00:29:19 +01:00
Robert Müller a61eec8f1e Add DDNet settings button to unregister protocol and file extensions
Add a button to the Miscellaneous DDNet settings to manually unregister the protocol and file extension handlers.
2022-12-29 18:03:08 +01:00
Robert Müller db3d1f19a9 Register protocol and file extensions on client launch on Windows
When launching the client on Windows, associate the protocol `ddnet` and the file extensions `.map` and `.demo` with the client executable.
2022-12-29 18:03:08 +01:00
Robert Müller 3b73107100 Add shell_unregister to delete protocol/file extension handlers
This function removes the registry keys that are created with `shell_register_protocol` and `shell_register_extension`.

According to the Microsoft documentation, only the keys for the program IDs should be deleted.
The keys that associate the file extensions with the program IDs should be kept, as Windows will automatically ignore the value if the program ID does not exist.

See: https://learn.microsoft.com/en-us/windows/win32/shell/fa-file-types#deleting-registry-information-during-uninstallation
2022-12-29 18:03:08 +01:00
Robert Müller 8a3a8974d0 Add shell_update to notify system to update shell
The `shell_update` function notifies the system when the shell needs to be updated due to a changed protocol or file association.

An output parameter is added to the `shell_register_protocol` and `shell_register_extension` functions, to determine whether the shell needs to be updated after calling the functions.
We only check whether the application path and program association were changed, instead of checking whether any key or value was changed, as this reduces the amount of necessary checks and we assume that the other values are not externally changed.

Because updating the shell is a potentially expensive operation, this should only be done when necessary and only once after registering all protocols and extensions.
2022-12-29 18:02:48 +01:00
Robert Müller 4e130a29e4 Add shell_register_extension to register file extension on Windows
This function register a file extension on Windows by creating the necessary registry keys and values.

The file extension is only registered for the current user in the registry key `HKEY_CURRENT_USER\SOFTWARE\Classes`, so admin privileges are not required.

Windows does not allow changing the default file extension handler programatically. When the user opens a file for which a new file extension handler exists, a dialog is shown that allows the user to change the default handler.
2022-12-29 18:01:42 +01:00
Robert Müller 7294ce5cf6 Add shell_register_protocol to register protocol handler on Windows
This function registers a protocol handler on Windows by creating the necessary registry keys and values.

The handler is only registered for the current user in the registry key `HKEY_CURRENT_USER\SOFTWARE\Classes`, so admin privileges are not required.
2022-12-29 18:01:40 +01:00
heinrich5991 93f0b278f9 Add tool to manually ping the mastersrv
Usage example: `masterping ipv6
https://master1.ddnet.org/ddnet/15/register`.

Returns 0 on success, nonzero on failure. Note that this might report
failure occasionally as it doesn't retry, UDP packets are non-reliable
so they might not arrive even though the mastersrv is up.
2022-12-29 12:50:24 +01:00