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nsapi - Added better heuristic for the default record of DNS queries 

Takes advantage of the get_ip_address function to predict the IP
address version wanted by the underlying interface. The should avoid
the need for most IPv6 interfaces to overload gethostbyname.

suggested by @kjbracey-arm
pull/3227/head
Christopher Haster 2016-10-28 11:41:33 -05:00 committed by Anna Bridge
parent 7efae2ebc9
commit 7657db4be9
1 changed files with 9 additions and 0 deletions
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9
features/netsocket/NetworkStack.cpp
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@ -33,6 +33,15 @@ int NetworkStack::gethostbyname(const char *name, SocketAddress *address, nsapi_
return 0; return 0;
} }
// if the version is unspecified, try to guess the version from the
// ip address of the underlying stack
if (version == NSAPI_UNSPEC) {
SocketAddress testaddress;
if (testaddress.set_ip_address(this->get_ip_address())) {
version = testaddress.get_ip_version();
}
}
return nsapi_dns_query(this, name, address, version); return nsapi_dns_query(this, name, address, version);
} }