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Of course both v4 and v6 addresses are kept in network byte order when
represented in bytes, but when writing, I somehow must have assumed that
inet_pton() returns host byte order. Fix that mixup in the API docs:
osmo_sockaddr_str_from_32() and osmo_sockaddr_str_to_32() actually use network
byte order.
osmo_sockaddr_str_from_32n() and osmo_sockaddr_str_to_32n() actually use host
byte order, though reflecting 'n' in their name.
sockaddr_str_test: use hexdump instead of %x to show the
osmo_sockaddr_str_to_32*() conversions so that the error becomes obvious.
(Printing %x reverses the bytes again and made it look correct.)
Change-Id: I3cf150cc0cc06dd36039fbde091bc71b01697322
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Currently planned user: for Distributed GSM in osmo-hlr: setting per-MSC
service addresses in VTY: replace/remove existing entries.
osmo_sockaddr_str_cmp() is useful to catch identical resulting IP addresses,
regardless of differing strings (e.g. '0::' and '::' are equal but differ in
strings).
Change-Id: I0dbc1cf707098dcda75f8e07c1b936951f9f9501
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Often, an IP address of 0.0.0.0 is considered an unset value (for clients
requiring a server address; not for listening on "any").
osmo_sockaddr_str_is_set() does return false when the port is 0, but there is
no simple way to tell whether the IP address is actually set to a server
address.
Add osmo_sockaddr_str_is_nonzero() to return false if:
- the port is zero, or
- the IP address is zero (0.0.0.0 or ::0), or
- the IP address cannot be parsed.
A practical use example: osmo-msc so far accepts an RTP IP address of 0.0.0.0
as valid. I noticed when trying to trigger error handling from a ttcn3 test.
osmo-msc can use this function to reject invalid addresses from MGCP messages.
Related: I53ddb19a70fda3deb906464e1b89c12d9b4c7cbd (osmo-msc)
Change-Id: I73cbcab90cffcdc9a5f8d5281c57c1f87b2c3550
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Obviously a NULL pointer should return false instead of segfaulting.
Change-Id: Iac025cf4d556cbed99f3924cd9ca05a05881cd9a
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For handling RTP IP addresses and ports, osmo-mgw, osmo-bsc and osmo-msc
so far have their own separate shims and code duplication around
inet_ntoa(), htons(), sockaddr conversions etc. Unify and standardize
with this common API.
In the MGW endpoint FSM that was introduced in osmo-bsc and which I
would like to re-use for osmo-msc (upcoming patch moving that to
osmo-mgw), it has turned out that using char* IP address and uint16_t
port number types are a convenient common denominator for logging,
MGCP message composition and GSM48. Ongoing osmo-msc work also uses this
for MNCC.
This is of course potentially useful for any other IP+port combinations
besides RTP stream handling.
Needless to say that most current implementations will probably stay
with their current own conversion code for a long time; for current
osmo-{bsc,msc,mgw} work (MGW endpoint FSM) though, I would like to move
to this API here.
Change-Id: Id617265337f09dfb6ddfe111ef5e578cd3dc9f63
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