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TUN-8861: Add session limiter to UDP session manager

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## Summary
In order to make cloudflared behavior more predictable and
prevent an exhaustion of resources, we have decided to add
session limits that can be configured by the user. This first
commit introduces the session limiter and adds it to the UDP
handling path. For now the limiter is set to run only in
unlimited mode.
This commit is contained in:
João "Pisco" Fernandes
2025-01-20 02:52:32 -08:00
parent 8918b6729e
commit bf4954e96a
66 changed files with 3409 additions and 1184 deletions
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9
vendor/golang.org/x/sys/windows/zsyscall_windows.go generated vendored
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@@ -401,6 +401,7 @@ var (
procTransmitFile = modmswsock.NewProc("TransmitFile")
procNetApiBufferFree = modnetapi32.NewProc("NetApiBufferFree")
procNetGetJoinInformation = modnetapi32.NewProc("NetGetJoinInformation")
procNetUserEnum = modnetapi32.NewProc("NetUserEnum")
procNetUserGetInfo = modnetapi32.NewProc("NetUserGetInfo")
procNtCreateFile = modntdll.NewProc("NtCreateFile")
procNtCreateNamedPipeFile = modntdll.NewProc("NtCreateNamedPipeFile")
@@ -3486,6 +3487,14 @@ func NetGetJoinInformation(server *uint16, name **uint16, bufType *uint32) (nete
return
}
func NetUserEnum(serverName *uint16, level uint32, filter uint32, buf **byte, prefMaxLen uint32, entriesRead *uint32, totalEntries *uint32, resumeHandle *uint32) (neterr error) {
r0, _, _ := syscall.Syscall9(procNetUserEnum.Addr(), 8, uintptr(unsafe.Pointer(serverName)), uintptr(level), uintptr(filter), uintptr(unsafe.Pointer(buf)), uintptr(prefMaxLen), uintptr(unsafe.Pointer(entriesRead)), uintptr(unsafe.Pointer(totalEntries)), uintptr(unsafe.Pointer(resumeHandle)), 0)
if r0 != 0 {
neterr = syscall.Errno(r0)
}
return
}
func NetUserGetInfo(serverName *uint16, userName *uint16, level uint32, buf **byte) (neterr error) {
r0, _, _ := syscall.Syscall6(procNetUserGetInfo.Addr(), 4, uintptr(unsafe.Pointer(serverName)), uintptr(unsafe.Pointer(userName)), uintptr(level), uintptr(unsafe.Pointer(buf)), 0, 0)
if r0 != 0 {