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tst_QDnsLookup: use the 4-argument writeDatagram() overload 

When using writeDatagram(QNetworkDatagram), the sendmsg() call on
FreeBSD is failing. It works on Linux and on macOS, so my guess is that
IP_PKTINFO works to set the sender address but IP_SENDSRCADDR is not
allowed in this context for some reason.

Before:
 recvmsg(5,{{ AF_INET 127.0.0.1:19530 },16,[{"H\M-p\^A\0\0\^A\0\0\0\0\0\^A\tso"...,49}],1,{{level=IPPROTO_IP,type=IP_RECVDSTADDR,data={0x7f,0x00,0x00,0x01}},{level=IPPROTO_IP,type=IP_RECVTTL,data={0x40}}},48,0},0) = 49 (0x31)
 sendmsg(5,{{ AF_INET 127.0.0.1:19530 },16,[{"H\M-p\M^@\^C\0\^A\0\0\0\0\0\^A\t"...,49}],1,{{level=IPPROTO_IP,type=IP_RECVDSTADDR,data={0x7f,0x00,0x00,0x01}}},24,0},MSG_NOSIGNAL) ERR#22 'Invalid argument'

After:
 recvmsg(5,{{ AF_INET 127.0.0.1:16018 },16,[{"\^U\M-X\^A\0\0\^A\0\0\0\0\0\^A\t"...,49}],1,{{level=IPPROTO_IP,type=IP_RECVDSTADDR,data={0x7f,0x00,0x00,0x01}},{level=IPPROTO_IP,type=IP_RECVTTL,data={0x40}}},48,0},0) = 49 (0x31)
 sendmsg(5,{{ AF_INET 127.0.0.1:16018 },16,[{"\^U\M-X\M^@\^C\0\^A\0\0\0\0\0\^A"...,49}],1,{},0,0},MSG_NOSIGNAL) = 49 (0x31)

Pick-to: 6.7
Change-Id: I455fe22ef4ad4b2f9b01fffd17c77565e230ce31
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
bb10
Thiago Macieira 2024-04-18 12:07:43 -07:00
parent 2dfb7f3337
commit 41675df695
1 changed files with 2 additions and 1 deletions
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3
tests/auto/network/kernel/qdnslookup/tst_qdnslookup.cpp
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@ -558,7 +558,8 @@ void tst_QDnsLookup::setNameserverLoopback()
QByteArray reply = data;
reply[2] = 0x80U; // header->qr = true;
reply[3] = 3; // header->rcode = NXDOMAIN;
server.writeDatagram(dgram.makeReply(reply));
server.writeDatagram(reply.constData(), reply.size(), dgram.senderAddress(),
dgram.senderPort());
server.close();
// now check that the QDnsLookup finished