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IPv6+mcast support

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This commit is contained in:
Michael Davidsaver
2021-09-08 09:30:51 -07:00
parent 1040e87f39
commit df4289b4e6
20 changed files with 1311 additions and 415 deletions
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test/testsock.cpp
+51 -34
View File
@@ -7,6 +7,7 @@
#include <osiSockExt.h>
#include <cstring>
#include <system_error>
#include <epicsUnitTest.h>
#include <testMain.h>
@@ -36,35 +37,49 @@ void test_ifacemap()
{
testDiag("Enter %s", __func__);
impl::IfaceMap ifs;
ifs.refresh();
auto& ifs = IfaceMap::instance();
testFalse(ifs.info.empty())<<" found "<<ifs.info.size()<<" interfaces";
epicsGuard<epicsMutex> G(ifs.lock); // since we are playing around with the internals...
ifs.refresh(true);
testFalse(ifs.byIndex.empty())<<" found "<<ifs.byIndex.size()<<" interfaces";
bool foundlo = false;
const auto lo(SockAddr::loopback(AF_INET));
for(const auto& iface : ifs.info) {
for(const auto& addr : iface.second) {
if(addr!=lo)
for(const auto& pair : ifs.byIndex) {
auto& iface = pair.second;
testDiag("Interface %u \"%s\"", unsigned(iface.index), iface.name.c_str());
for(const auto& pair : iface.addrs) {
testDiag(" Address %s/%s", pair.first.tostring().c_str(), pair.second.tostring().c_str());
if(pair.first!=lo)
continue;
testTrue(!foundlo)<<" Found loopback with index "<<iface.first;
testTrue(!foundlo)<<" Found loopback with index "<<iface.index;
foundlo = true;
}
}
}
void test_udp()
void test_udp(int af)
{
testDiag("Enter %s", __func__);
testDiag("Enter %s(%d)", __func__, af);
evsocket A(AF_INET, SOCK_DGRAM, 0),
B(AF_INET, SOCK_DGRAM, 0);
evsocket A(af, SOCK_DGRAM, 0),
B(af, SOCK_DGRAM, 0);
SockAddr bind_addr(SockAddr::loopback(AF_INET));
SockAddr bind_addr(SockAddr::loopback(af));
enable_IP_PKTINFO(A.sock);
A.bind(bind_addr);
A.enable_IP_PKTINFO();
try{
A.bind(bind_addr);
}catch(std::system_error& e){
if(af==AF_INET6 && e.code().value()==SOCK_EADDRNOTAVAIL) {
testSkip(7, "No runtime IPv6 support");
return;
}
testAbort("Unable to bind %s : (%d) %s", bind_addr.tostring().c_str(), e.code().value(), e.what());
}
testNotEq(bind_addr.port(), 0)<<"bound port";
SockAddr send_addr(bind_addr);
@@ -84,7 +99,7 @@ void test_udp()
testDiag("Call recvfrom()");
ret = recvfromx{A.sock, (char*)rxbuf, sizeof(rxbuf), &src, &dest}.call();
// only the destination address is captured, not the port
if(dest.family()==AF_INET)
if(dest.family()!=AF_UNSPEC)
dest.setPort(bind_addr.port());
testOk(ret==4 && rxbuf[0]==0x12 && rxbuf[1]==0x34 && rxbuf[2]==0x56 && rxbuf[3]==0x78,
@@ -102,28 +117,27 @@ void test_local_mcast()
evsocket A(AF_INET, SOCK_DGRAM, 0),
B(AF_INET, SOCK_DGRAM, 0);
SockAddr mcast_addr(AF_INET, "224.0.0.128");
SockEndpoint mcast_addr("224.0.0.128,1@127.0.0.1");
// We could bind to mcast_addr on all targets except WIN32
SockAddr bind_addr(SockAddr::any(AF_INET));
enable_IP_PKTINFO(A.sock);
A.enable_IP_PKTINFO();
A.bind(bind_addr);
mcast_addr.setPort(bind_addr.port());
mcast_addr.addr.setPort(bind_addr.port());
SockAddr sender_addr(SockAddr::loopback(AF_INET));
B.bind(sender_addr);
// receiving socket joins on the loopback interface
A.mcast_join(mcast_addr, sender_addr); // ignores port(s)
A.mcast_join(mcast_addr.resolve()); // ignores port(s)
// sending socket targets the loopback interface
B.mcast_iface(sender_addr); // ignores port(s)
B.mcast_ttl(1);
B.mcast_prep_sendto(mcast_addr); // ignores port(s)
B.mcast_loop(true);
uint8_t msg[] = {0x12, 0x34, 0x56, 0x78};
int ret = sendto(B.sock, (char*)msg, sizeof(msg), 0, &mcast_addr->sa, mcast_addr.size());
int ret = sendto(B.sock, (char*)msg, sizeof(msg), 0, &mcast_addr.addr->sa, mcast_addr.addr.size());
testEq(ret, (int)sizeof(msg))<<"Send test";
uint8_t rxbuf[8] = {};
@@ -134,7 +148,7 @@ void test_local_mcast()
recvfromx rx{A.sock, (char*)rxbuf, sizeof(rxbuf), &src, &dest};
ret = rx.call();
if(dest.family()==AF_INET)
dest.setPort(mcast_addr.port());
dest.setPort(mcast_addr.addr.port());
testTrue(ret>=0 && rx.dstif>0 && ifinfo.has_address(rx.dstif, sender_addr))
<<" received on index "<<rx.dstif;
@@ -143,14 +157,14 @@ void test_local_mcast()
"Recv'd %d [%u, %u, %u, %u]", ret, rxbuf[0], rxbuf[1], rxbuf[2], rxbuf[3]);
testEq(src, sender_addr);
testEq(dest, mcast_addr);
testEq(dest, mcast_addr.addr);
}
void test_mcast_scope()
{
testDiag("Enter %s", __func__);
SockAddr mcast_addr(AF_INET, "224.0.0.128");
SockEndpoint mcast_addr("224.0.0.128,1@127.0.0.1");
auto any(SockAddr::any(AF_INET));
auto lo(SockAddr::loopback(AF_INET));
auto sender(SockAddr::loopback(AF_INET));
@@ -167,9 +181,7 @@ void test_mcast_scope()
epicsSocketEnableAddressUseForDatagramFanout(RX4.sock);
TX.mcast_loop(true);
TX.mcast_ttl(1u);
// endure message goes out through LO
TX.mcast_iface(lo);
TX.mcast_prep_sendto(mcast_addr);
TX.bind(sender);
testShow()<<" sender bound to "<<sender;
@@ -177,7 +189,7 @@ void test_mcast_scope()
// by winsock bind() documentation
RX1.bind(any);
mcast_addr.setPort(any.port()); // bind all RX* to the same port
mcast_addr.addr.setPort(any.port()); // bind all RX* to the same port
lo.setPort(any.port());
testShow()<<" RX1 bound to "<<any;
RX2.bind(any);
@@ -186,17 +198,17 @@ void test_mcast_scope()
testShow()<<" RX3 bound to "<<lo;
#ifndef _WIN32
// winsock doesn't allow binding to an mcast address
RX4.bind(mcast_addr);
RX4.bind(mcast_addr.addr);
testShow()<<" RX4 bound to "<<mcast_addr;
#endif
testShow()<<" Join RX1 to "<<mcast_addr<<" on "<<lo;
RX1.mcast_join(mcast_addr, lo);
RX1.mcast_join(mcast_addr.resolve());
const char msg[] = "hello world!";
auto msglen = sizeof(msg)-1u;
auto ret = sendto(TX.sock, msg, msglen, 0, &mcast_addr->sa, lo.size());
auto ret = sendto(TX.sock, msg, msglen, 0, &mcast_addr.addr->sa, mcast_addr.addr.size());
testEq(ret, int(msglen))<<" sendto("<<sender<<" -> "<<mcast_addr<<") err="<<EVUTIL_SOCKET_ERROR();
auto doRX = [&lo, &msg, msglen](unsigned idx, evsocket& sock, bool expectrx) {
@@ -342,10 +354,15 @@ MAIN(testsock)
{
SockAttach attach;
logger_config_env();
testPlan(51);
testPlan(58);
testSetup();
test_ifacemap();
test_udp();
test_udp(AF_INET);
try{
test_udp(AF_INET6);
}catch(std::exception&e){
testAbort("test_udp6: %s", e.what());
}
test_local_mcast();
test_mcast_scope();
test_from_wire();