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Code for setting the TCP_NODELAY option is wrong #941

rfalke opened this Issue Aug 30, 2018 · 1 comment


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rfalke commented Aug 30, 2018

The code in the current master is:

	if(setsockopt(new_sock, IPPROTO_TCP, TCP_NODELAY, &flag, sizeof(int) != 0)){
		log__printf(NULL, MOSQ_LOG_WARNING, "Warning: Unable to set TCP_NODELAY.");

But the parentheses are set wrong which results in a call setsockopt(..., 1) which the kernel answers with EINVAL.

ralight added a commit that referenced this issue Aug 30, 2018

Fix incorrect call to setsockopt() for TCP_NODELAY.
Closes #941. Thanks to rfalke.

Signed-off-by: Roger A. Light <>

@ralight ralight added this to the 1.5.2 milestone Aug 30, 2018


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ralight Aug 30, 2018


Thank you! That's now fixed in the fixes branch.


ralight commented Aug 30, 2018

Thank you! That's now fixed in the fixes branch.

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