Appending an option in TCP header

[Shashwat Kumar]

I am trying to append an option in TCP header.
By using TcpHeader->appendOption(), option is appended after TcpOption::END option that is not desirable. Ant help how can I append option before TcpOption::END.

[Natale Patriciello]

It depends when you're trying to append the option, in what point of the
code. TcpOptionEnd is added slightly before the segment has to be passed down the
stack, if I remember correctly.

Nat

[Shashwat Kumar]

I am capturing the packet at an intermediate node and try to make the change.
(What things I should take care while adding a option in the header.)

[Natale Patriciello]

On 09/12/16 at 03:27am, 'Shashwat Kumar' via ns-3-users wrote:
> I am capturing the packet at an intermediate node and try to make the
> change.
> (What things I should take care while adding a option in the header.)
>

TCP is an end-to-end protocol, so what you're doing violate the layer
rule. So, you should re-do the options placement in the intermediate node.

Nat

[Shashwat Kumar]

I am trying to add one option for some experiments. While I am trying to append the option, I am getting memory leak problem but I not able to find the cause.
Can you guide me which step I should follow to append a option in the header, may be I am missing some step.
Thank You.