/// <summary>
/// 传送文件到服务器.
/// </summary>
/// <param name="client">
/// The client.
/// </param>
/// <param name="compressFile">
/// The compress file.
/// </param>
/// <param name="offset">
/// The offset.
/// </param>
/// <param name="ask">
/// The ask.
/// </param>
/// <param name="act">
/// The act.
/// </param>
/// <param name="onprogress">
/// The onprogress.
/// </param>
/// <returns>
/// 成功返回NULL, 失败返回错误信息.
/// </returns>
private static string TransferFile(Socket client, string compressFile, int offset, out string ask, RequestHeaderAction act, EventHandler onprogress)
{
ask = null;
string error;
try
{
// 文件长度
var fileLength = (int)new FileInfo(compressFile).Length;
// 发送报头
new RequestHeader { Action = act, BodyLength = (uint)(fileLength - offset) }.SendToServer(client);
// 接收, 解析应答
ResponseMessage repMsg;
error = ParseResponse(client.Receive(ReceiveBuffer), ReceiveBuffer, out repMsg);
if (error != null)
return error;
if (repMsg.Action == ResponseMessageAction.Stop)
return repMsg.Message;
// 服务器询问文件覆盖模式
if (repMsg.Action == ResponseMessageAction.Ask)
{
ask = repMsg.Message;
}
else
{
// 成功, 继续发送报身
using (var fs = File.Open(compressFile, FileMode.Open, FileAccess.Read, FileShare.Read))
{
// fs指针移动到指定偏移量
fs.Seek(offset, SeekOrigin.Begin);
int readLength;
var sendAllLength = 0;
while ((readLength = fs.Read(SendBuffer, 0, SendBuffer.Length)) > 0)
{
sendAllLength += client.Send(SendBuffer, 0, readLength, SocketFlags.None);
// 进度事件
onprogress(new[] { sendAllLength + offset, fileLength }, null);
}
}
// 接收, 解析应答
error = ParseResponse(client.Receive(ReceiveBuffer), ReceiveBuffer, out repMsg);
if (error != null)
return error;
if (repMsg.Action == ResponseMessageAction.Stop)
return repMsg.Message;
}
}
catch (Exception exp)
{
error = exp.Message;
}
return error;
}
/// <summary>
/// 发送消息头(没有正文的情况)
/// </summary>
/// <param name="client">
/// The client.
/// </param>
/// <param name="act">
/// The act.
/// </param>
/// <returns>
/// 成功返回NULL, 失败返回错误信息.
/// </returns>
private static string SendHeaderSimple(Socket client, RequestHeaderAction act)
{
string error;
try
{
// 发送报头
new RequestHeader { Action = act, BodyLength = 0 }.SendToServer(client);
// 接收, 解析应答
ResponseMessage repMsg;
error = ParseResponse(client.Receive(ReceiveBuffer), ReceiveBuffer, out repMsg);
if (error != null)
return error;
if (repMsg.Action == ResponseMessageAction.Stop)
return repMsg.Message;
}
catch (Exception exp)
{
error = exp.Message;
}
return error;
}