# Create static NAT entry

This sample application demonstrates how to create static NAT entry.

1. Implement initialization callback and get the DataFactory instance

Optionally, initialization callback can be provided with get manager instance.
Data factory will call callback when manager initialization is complete.

auto initCb = [&](telux::common::ServiceStatus status) {
       std::lock_guard<std::mutex> lock(mtx);
       status_ = status;
       initCv.notify_all();
    };
    
    auto &dataFactory = telux::data::DataFactory::getInstance();
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2. Get the NatManager instances

std::unique_lock<std::mutex> lck(mtx);
    auto dataSnatMgr  = dataFactory.getNatManager(opType);
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3. Wait for NatManager initialization to be complete

initCv.wait(lck);
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3.1 Check NatManager initialization state

If NatManager initialization failed, new initialization attempt can be accomplished
by calling step 2. If NatManager initialization succeed, proceed to step 4.

if (status_ == telux::common::ServiceStatus::SERVICE_AVAILABLE) {
       // Go to step 4
    }
    else {
       //Go to step 2 for another initialization attempt
    }
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4. Implement callback for create SNAT entry

auto respCb = [](telux::common::ErrorCode error) {
       std::cout << std::endl << std::endl;
       std::cout << "CALLBACK: "
                   << "addStaticNatEntry"
                   << (error == telux::common::ErrorCode::SUCCESS ? " is successful" : " failed");
    };
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5. Create Snat entry based on profile id, local ip, local port, global port, and protocol

natConfig.addr = ipAddr;
    natConfig.port = (uint16_t)localIpPort;
    natConfig.globalPort = (uint16_t)globalIpPort;
    natConfig.proto = (uint8_t)proto;
    dataSnatMgr->addStaticNatEntry(profileId, natConfig, respCb);
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Now, response callback will be called for the addStaticNatEntry response.

Last Published: Aug 05, 2026

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