Change in libosmo-abis[master]: ipa: do not open socket in nonblocking mode

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dexter gerrit-no-reply at lists.osmocom.org
Fri May 21 20:29:50 UTC 2021


dexter has posted comments on this change. ( https://gerrit.osmocom.org/c/libosmo-abis/+/24332 )

Change subject: ipa: do not open socket in nonblocking mode
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Patch Set 1:

This patch may be a bit controversial, I might need a little help here.

The problem is that I am able to open sockets non existing IP-addresses with ipa_client_conn_open(). The reason for this is that the OSMO_SOCK_F_NONBLOCK is set. 

(see also https://linux.die.net/man/3/connect, "O_NONBLOCK is set for the file descriptor for the socket and the connection cannot be immediately established; the connection shall be established asynchronously.")

This means at the moment where I call ipa_client_conn_open(), the connection is not yet made when the call returns.

In this patch I remove OSMO_SOCK_F_NONBLOCK. This fixes the problem I have in osmo-bts at the moment. Everything appears to be fine, I also think that since everything in the osmo-world is controlled via a select loop the nonblocking mode is not even necessary but I am not sure.


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Gerrit-Project: libosmo-abis
Gerrit-Branch: master
Gerrit-Change-Id: I926a75920f7a15c670f7445f2e74e876c5fad7be
Gerrit-Change-Number: 24332
Gerrit-PatchSet: 1
Gerrit-Owner: dexter <pmaier at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-Reviewer: pespin <pespin at sysmocom.de>
Gerrit-Comment-Date: Fri, 21 May 2021 20:29:50 +0000
Gerrit-HasComments: No
Gerrit-Has-Labels: No
Gerrit-MessageType: comment
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