feat: Handle OobData #210
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feat: Handle OobData #210
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Adds OobData []byte to the Message struct. During the Recieve() function, this field is populated with the raw bytes of any control messages recieved from the recvmsg call. An example of how to process the OobData field has been included. This feature requires the user to set EnableControlMessages in the Config. This is to avoid allocating an additional page per recvmsg call unless it's absolutely necessary. Signed-off-by: Dave Tucker <[email protected]>
mdlayher
reviewed
Mar 14, 2024
| Data []byte | ||
| Header Header | ||
| Data []byte | ||
| OobData []byte |
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Suggested change
| OobData []byte | |
| OOBData []byte |
In canonical Go style.
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
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| var rawOob []byte |
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| var rawOob []byte | |
| var rawOOB []byte |
| // EnableControlMessages enables the use of control messages for | ||
| // netlink. This option is intended for advanced use cases where the | ||
| // caller needs to receive control messages that contain ancillary data. | ||
| // For example, when using options like `ListenAllNSID`. |
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Add another sentence like:
// When enabled, the Message.OOBData field will be populated with control message data.
| log.Fatalf("failed to dial netlink: %v", err) | ||
| } | ||
| defer c.Close() | ||
| c.SetOption(netlink.ListenAllNSID, true) |
| // Iterate over recieved messages and print them | ||
| for _, msg := range msgs { | ||
| // If the message contains oob data, parse it and print the netnsid | ||
| if msg.OobData != nil { |
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Invert conditional and continue if nil rather than adding indentation.
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Adds OobData []byte to the Message struct.
During the Recieve() function, this field is populated with the raw bytes of any control messages recieved from the recvmsg call.
An example of how to process the OobData field has been included.