Revert "Add multi-address support for PeerAddress" (#15082)

* Revert "Add ability to keep several IP addresses per PeerAddress (#14968)"

This reverts commit 14eb3f5.

* Add back unit tests for peer address to string formatting. More tests are good

* Maintain the cleanup of ToPeerAddress from the previous patch - that was good

* Restyle

src/app/OperationalDeviceProxy.h

@@ -178,31 +178,19 @@ class DLL_EXPORT OperationalDeviceProxy : public DeviceProxy, SessionReleaseDele
 
     static Transport::PeerAddress ToPeerAddress(const Dnssd::ResolvedNodeData & nodeData)
     {
-        Transport::PeerAddress address = Transport::PeerAddress(Transport::Type::kUdp);
-        address.SetPort(nodeData.mPort);
-
-        for (unsigned i = 0; i < nodeData.mNumIPs; i++)
+        Inet::InterfaceId interfaceId = Inet::InterfaceId::Null();
+
+        // TODO - Revisit usage of InterfaceID only for addresses that are IPv6 LLA
+        // Only use the DNS-SD resolution's InterfaceID for addresses that are IPv6 LLA.
+        // For all other addresses, we should rely on the device's routing table to route messages sent.
+        // Forcing messages down an InterfaceId might fail. For example, in bridged networks like Thread,
+        // mDNS advertisements are not usually received on the same interface the peer is reachable on.
+        if (nodeData.mAddress[0].IsIPv6LinkLocal())
         {
-            const auto addr = nodeData.mAddress[i];
-            // Only use the mDNS resolution's InterfaceID for addresses that are IPv6 LLA.
-            // For all other addresses, we should rely on the device's routing table to route messages sent.
-            // Forcing messages down an InterfaceId might fail. For example, in bridged networks like Thread,
-            // mDNS advertisements are not usually received on the same interface the peer is reachable on.
-            // TODO: Right now, just use addr0, but we should really push all the addresses and interfaces to
-            // the device and allow it to make a proper decision about which addresses are preferred and reachable.
-            CHIP_ERROR err = address.AppendDestination(nodeData.mAddress[i],
-                                                       addr.IsIPv6LinkLocal() ? nodeData.mInterfaceId : Inet::InterfaceId::Null());
-
-            if (err != CHIP_NO_ERROR)
-            {
-                char addr_str[Inet::IPAddress::kMaxStringLength];
-                addr.ToString(addr_str);
-
-                ChipLogError(Controller, "Could not append IP address %s: %s", addr_str, err.AsString());
-            }
+            interfaceId = nodeData.mInterfaceId;
         }
 
-        return address;
+        return Transport::PeerAddress::UDP(nodeData.mAddress[0], nodeData.mPort, interfaceId);
     }
 
 private:

src/controller/CommissioneeDeviceProxy.h

@@ -214,7 +214,7 @@ class CommissioneeDeviceProxy : public DeviceProxy, public SessionReleaseDelegat
 
     Messaging::ExchangeManager * GetExchangeManager() const override { return mExchangeMgr; }
 
-    void SetAddress(const Inet::IPAddress & deviceAddr) { mDeviceAddress.SetSingleIPAddress(deviceAddr); }
+    void SetAddress(const Inet::IPAddress & deviceAddr) { mDeviceAddress.SetIPAddress(deviceAddr); }
 
     PASESession & GetPairing() { return mPairing; }
 

src/controller/python/ChipDeviceController-ScriptBinding.cpp

@@ -324,7 +324,7 @@ ChipError::StorageType pychip_DeviceController_ConnectIP(chip::Controller::Devic
     VerifyOrReturnError(chip::Inet::IPAddress::FromString(peerAddrStr, peerAddr), CHIP_ERROR_INVALID_ARGUMENT.AsInteger());
 
     // TODO: IP rendezvous should use TCP connection.
-    addr.SetTransportType(chip::Transport::Type::kUdp).SetSingleIPAddress(peerAddr);
+    addr.SetTransportType(chip::Transport::Type::kUdp).SetIPAddress(peerAddr);
     params.SetPeerAddress(addr).SetDiscriminator(0);
 
     devCtrl->ReleaseOperationalDevice(nodeid);
@@ -380,7 +380,7 @@ ChipError::StorageType pychip_DeviceController_EstablishPASESessionIP(chip::Cont
     chip::Transport::PeerAddress addr;
     RendezvousParameters params = chip::RendezvousParameters().SetSetupPINCode(setupPINCode);
     VerifyOrReturnError(chip::Inet::IPAddress::FromString(peerAddrStr, peerAddr), CHIP_ERROR_INVALID_ARGUMENT.AsInteger());
-    addr.SetTransportType(chip::Transport::Type::kUdp).SetSingleIPAddress(peerAddr);
+    addr.SetTransportType(chip::Transport::Type::kUdp).SetIPAddress(peerAddr);
     params.SetPeerAddress(addr).SetDiscriminator(0);
     return devCtrl->EstablishPASEConnection(nodeid, params).AsInteger();
 }

src/transport/raw/BUILD.gn

@@ -22,7 +22,6 @@ static_library("raw") {
     "Base.h",
     "MessageHeader.cpp",
     "MessageHeader.h",
-    "PeerAddress.cpp",
     "PeerAddress.h",
     "TCP.cpp",
     "TCP.h",