/// <summary>
/// 下载单个PIP文件。
/// </summary>
/// <param name="url"></param>
/// <param name="timeout"></param>
/// <returns></returns>
private IEnumerator DownloadPIP(string url, float timeout)
{
MyLog.InfoWithFrame(name,
string.Format("Start download pip. url: {0}, timeout: {1} seconds.", url, timeout));
var startTime = Time.time;
var www = UnityWebRequest.Get(url);
www.SendWebRequest();
var isTimeout = false;
while (!www.isDone)
{
if (Time.time - startTime >= timeout)
{
isTimeout = true;
MyLog.InfoWithFrame(name, "Download pip failed. Timeout!");
break;
}
// 一帧检查一次下载是否超时了。
yield return(null);
}
if (!isTimeout)
{
if (!www.isNetworkError && !www.isHttpError)
{
// 正常下载完成，且未发生错误，解析文本。
try
{
var bytes = www.downloadHandler.data;
var content = Encoding.UTF8.GetString(bytes);
var pipData = ParsePIP(content);
if (pipData != null &&
ValidatePIP(pipData.Host, pipData.Port))
{
// 主机地址和端口正确的情况下，认为下载PIP成功。
_pipData = pipData;
SavePIP(_pipData.Host, _pipData.Port);
_currentStatus = PIPStatus.Success;
MyLog.InfoWithFrame(
name,
string.Format(
"PIP success! Host: {0}, Port: {1}",
_pipData.Host, _pipData.Port
)
);
}
}
catch (Exception e)
{
MyLog.ErrorWithFrame(name, "Decoding pip failed: " + e.Message);
}
}
else
{
MyLog.ErrorWithFrame(name, string.Format("Download pip fail: {0}", www.error));
}
}
www.Dispose();
}
/// <summary>
/// 开始下载PIP。
/// </summary>
private IEnumerator FetchingPIPCoroutine()
{
if (PIPConfig == null || PIPConfig.PIPList == null || PIPConfig.PIPList.Count <= 0)
{
_currentStatus = PIPStatus.NoPIP;
MyLog.ErrorWithFrame(name, "PIP address empty!");
yield break;
}
_currentStatus = PIPStatus.Downloading;
var product = _configHolder.Product;
var saleChannel = _configHolder.SaleChannel;
var clientVersion = _configHolder.ClientVersion;
// 如果渠道不存在则使用All。
if (string.IsNullOrEmpty(saleChannel))
{
saleChannel = "All";
}
foreach (var pip in PIPConfig.PIPList)
{
MyLog.InfoWithFrame(name, string.Format("Start fetching pip from: {0}", pip));
for (int i = 0; i < PIPConfig.PIPRetryCount; i++)
{
MyLog.InfoWithFrame(name, string.Format("Try {0}:", i + 1));
// 1、第一次尝试下载产品+渠道+版本的特殊的PIP地址。
yield return(StartCoroutine(
DownloadPIP(
string.Format("{0}/PIP.{1}.{2}.{3}.txt?mcachenum={4}",
pip,
product,
saleChannel,
clientVersion,
DateTime.Now.ToFileTime()),
PIPConfig.Timeout1)
));
// 如果下载成功，则不需要再继续下载了。
if (_currentStatus == PIPStatus.Success)
{
yield break;
}
// 2、第二次尝试下载产品+渠道的特殊的PIP地址。
yield return
(StartCoroutine(
DownloadPIP(
string.Format("{0}/PIP.{1}.{2}.txt?mcachenum={3}",
pip,
product,
saleChannel,
DateTime.Now.ToFileTime()),
PIPConfig.Timeout1)
));
// 如果下载成功，则不需要再继续下载了。
if (_currentStatus == PIPStatus.Success)
{
yield break;
}
// 3、第三次尝试下载产品通用的PIP地址。
yield return
(StartCoroutine(
DownloadPIP(
string.Format("{0}/PIP.{1}.All.txt?mcachenum={2}",
pip,
product,
DateTime.Now.ToFileTime()),
PIPConfig.Timeout2)
));
if (_currentStatus == PIPStatus.Success)
{
yield break;
}
// 4、第三次尝试下载产品通用的PIP地址。
yield return
(StartCoroutine(
DownloadPIP(
string.Format("{0}/PIP.All.txt?mcachenum={1}",
pip,
DateTime.Now.ToFileTime()),
PIPConfig.Timeout2)
));
if (_currentStatus == PIPStatus.Success)
{
yield break;
}
}
}
// 整个PIPList都没有下载成功，此时应该获取上一次系统中保存的PIP列表。
var host = GetLastHost();
var port = GetLastPort();
if (ValidatePIP(host, port))
{
_pipData = new PIPData
{
Host = host,
Port = port
};
_currentStatus = PIPStatus.Success;
MyLog.InfoWithFrame(name, string.Format("WWW completely failed, use last pip: {0}:{1}.", host, port));
yield break;
}
// 上一次登陆的地址也获取失败，此时只能使用默认的地址。
host = PIPConfig.DefaultHost;
port = PIPConfig.DefaultPort;
if (ValidatePIP(host, port))
{
_pipData = new PIPData
{
Host = host,
Port = port
};
_currentStatus = PIPStatus.Success;
MyLog.InfoWithFrame(name,
string.Format("Last pip dose not exists, use default pip: {0}:{1}.", host, port));
}
else
{
// 默认地址也无效，则只能失败了。
_currentStatus = PIPStatus.Fail;
MyLog.InfoWithFrame(name, "No default pip, PIP failed!!!!!!!!!!");
}
}
