Logger.cs

using System.Collections;
using UnityEngine;
using UnityEngine.Networking;

namespace LumberLogs
{

    public class Logger : MonoBehaviour
    {

    #pragma warning disable CS0649
        [SerializeField]
        private string url;
    #pragma warning restore CS0649

        private int failedConnections;

        private const int maxFailedConnections = 10;

    #if UNITY_EDITOR || DEVELOPMENT_BUILD

        private void OnEnable()
        {

            Application.logMessageReceived += HandleLog;

        }

        private void OnDisable()
        {

            Application.logMessageReceived -= HandleLog;

        }

    #endif

        private void HandleLog(string logString, string stackTrace, LogType type)
        {

            if (url == null || failedConnections >= maxFailedConnections)
            {
                return;
            }

            var loggingForm = new WWWForm();

            loggingForm.AddField("Type", type.ToString());
            loggingForm.AddField("Message", logString);
            loggingForm.AddField("Stack_Trace", stackTrace);
            loggingForm.AddField("Device_Model", SystemInfo.deviceModel);

            StartCoroutine(SendDataToLumberLog(loggingForm));

        }

        private IEnumerator SendDataToLumberLog(WWWForm form)
        {
            using (var www = UnityWebRequest.Post(url, form))
            {

                yield return www.SendWebRequest();

                if (!www.isNetworkError && !www.isHttpError)
                {
                    yield break;
                }

                Debug.LogError(www.error);

                failedConnections += 1;

            }

        }

    }

}

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LumberLogs.asmdef

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	"name": "LumberLogs"
}

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package.json

{
    "name": "com.scottdoxey.lumberlogs",
    "displayName": "Lumber Logs",
    "version": "1.0.0",
    "unity": "2019.3",
    "description": "A self-hosted log aggregation tool."
}

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