https://github.com/markondej/cpp-icmplib

A C++ header-only ICMP Ping library
https://github.com/markondej/cpp-icmplib

Last synced: 8 days ago
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A C++ header-only ICMP Ping library

• Host: GitHub
• URL: https://github.com/markondej/cpp-icmplib
• Owner: markondej
• License: other
• Created: 2021-07-31T23:33:12.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2024-01-02T17:22:40.000Z (11 months ago)
• Last Synced: 2024-03-13T17:33:37.663Z (8 months ago)
• Language: C++
• Homepage:
• Size: 58.6 KB
• Stars: 20
• Watchers: 4
• Forks: 6
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# A C++ header-only ICMP/ICMPv6 Ping library

cpp-icmplib is simple header-only cross-platform library, which allows performing system-like ping requests from C++ applications without need of using system "ping" command.

As this library is socket-based, on most operating systems, it will require administrator privilages (root) to run.

## How to use

icmplib delivers function Ping declared as:

```

PingResult Ping(const icmplib::AddressIP &target, unsigned timeout = 1000, uint16_t sequence = 1, uint8_t ttl = 255);

```

Notice:

* target - Network address (may be created from std::string)

* timeout - Timeout in milliseconds

* sequence - Sequence number to be sent

* ttl - Time-to-live to be set for packet

PingResult structure is declared as:

```

struct PingResult {

    enum class ResponseType {

        Success,

        Unreachable,

        TimeExceeded,

        Timeout,

        Unsupported,

        Failure

    } response;

    double delay;

    icmplib::AddressIP address;

    uint8_t code;

    uint8_t ttl;

};

```

Notice:

* delay - Time in miliseconds between sending request and receiving response

* address - Address of responding host

* code - ICMP Code parameter

* ttl - Received IPv4 header TTL parameter 

* response - Type of received response

```

ResponseType            | Meaning

--------------------------------------------------------------------------------------------------------

Success                 | ICMP Echo Response successfully received

Unreachable             | ICMP Destination Ureachable message received (eg. target host does not exist)

TimeExceeded            | ICMP Time Exceeded message received (eg. TTL meet zero value on some host)

Timeout                 | No message recived in given time (see "timeout" parameter)

Unsupported             | Received unsupported ICMP packet

Failure                 | Failed to send ICMP Echo Request to given target host

```

## Examples

In order to make internet connection test simply use:

```

#include "icmplib.h"

...

bool isConnected()

{

    return icmplib::Ping("8.8.8.8", ICMPLIB_TIMEOUT_1S).response == icmplib::PingResponseType::Success; // Test Google DNS address

}

```

Simple traceroute implementation:

```

#include "icmplib.h"

#include 

...

std::vector traceroute(const std::string &address)

{

    std::vector result;

    for (uint8_t ttl = 1; ttl != 0; ttl++) {

        auto ping = icmplib::Ping(address, ICMPLIB_TIMEOUT_1S, 1, ttl);

        switch (ping.response) {

        case icmplib::PingResult::ResponseType::TimeExceeded:

            result.push_back(ping.address.ToString());

            break;

        case icmplib::PingResult::ResponseType::Success:

            result.push_back(ping.address.ToString());

            return result;

        default:

            return result;

        }

    }

    return result;

}

```

## Known issues

On Windows 10 ICMP messages other than Echo Response seem to be blocked and, while being received, are not passed to application via socket, timeout is detected instead