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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| // Copyright 2024 Jigsaw Operations LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // https://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| //go:build linux | ||
|
|
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| package service | ||
|
|
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| import ( | ||
| "os" | ||
| "syscall" | ||
| ) | ||
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| func SetFwmark(rc syscall.RawConn, fwmark uint) error { | ||
| var err error | ||
| rc.Control(func(fd uintptr) { | ||
| err = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_MARK, int(fwmark)) | ||
| }) | ||
| if err != nil { | ||
| return os.NewSyscallError("failed to set fwmark for socket", err) | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,40 @@ | ||
| // Copyright 2024 Jigsaw Operations LLC | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // https://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
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| //go:build linux | ||
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| package service | ||
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|
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| import ( | ||
| "net" | ||
| "syscall" | ||
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| "github.com/Jigsaw-Code/outline-sdk/transport" | ||
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| onet "github.com/Jigsaw-Code/outline-ss-server/net" | ||
| ) | ||
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| // fwmark can be used in conjunction with other Linux networking features like cgroups, network namespaces, and TC (Traffic Control) for sophisticated network management. | ||
| // Value of 0 disables fwmark (SO_MARK) (Linux Only) | ||
| func MakeValidatingTCPStreamDialer(targetIPValidator onet.TargetIPValidator, fwmark uint) transport.StreamDialer { | ||
| return &transport.TCPDialer{Dialer: net.Dialer{Control: func(network, address string, c syscall.RawConn) error { | ||
| if fwmark > 0 { | ||
| if err := SetFwmark(c, fwmark); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| ip, _, _ := net.SplitHostPort(address) | ||
| return targetIPValidator(net.ParseIP(ip)) | ||
| }}} | ||
| } |
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