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Asked: 2026-05-11T14:07:59+00:00

I am doing a project where I must craft custom packets. That is, I

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I am doing a project where I must craft custom packets. That is, I have to have control of each packet header. I am trying to do this using sockets. Basically, what I need to do is this:

SOCKET s = socket(PF_UNSPEC, SOCK_RAW, ethernet_type);

The ethernet_type is something that is customized, non-standard, like 0xAAAA. I am using htons(). Also, it is very preferable for me not to use winPcap.

Right now, I am getting error 10043, protocol not supported.

The error message seems to suggest that I can configure the protocol into my system, but I have no idea how to do that.

It says:

Protocol not supported. The requested protocol has not been configured into the system, or no implementation for it exists. For example, a socket call requests a SOCK_DGRAM socket, but specifies a stream protocol.

There are a few different issues here, so if anyone has any input at all I’d really appreciate it.

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1 Answer

  1. According to these articles, Microsoft removed raw socket support from Windows in a non-removable hotfix. So you may be out of luck unless you want to switch to another OS.

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