dubbo-cluster-extensions/dubbo-cluster-specify-address-dubbo2/src/main/java/org/apache/dubbo/rpc/cluster/specifyaddress/UserSpecifiedAddressRouter.java [155:168]:
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        if (port != 0) {
            targetInvoker = address2Invoker.get(ip + ":" + port);
            if (targetInvoker != null) {
                return targetInvoker;
            }
        } else {
            targetInvoker = ip2Invoker.get(ip);
            if (targetInvoker != null) {
                return targetInvoker;
            }
        }

        if (!address.isNeedToCreate()) {
            throwException(address);
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dubbo-cluster-extensions/dubbo-cluster-specify-address-dubbo3/src/main/java/org/apache/dubbo/rpc/cluster/specifyaddress/UserSpecifiedAddressRouter.java [214:227]:
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        if (port != 0) {
            targetInvoker = address2Invoker.get(ip + ":" + port);
            if (targetInvoker != null) {
                return targetInvoker;
            }
        } else {
            targetInvoker = ip2Invoker.get(ip);
            if (targetInvoker != null) {
                return targetInvoker;
            }
        }

        if (!address.isNeedToCreate()) {
            throwException(address);
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