tcp网络编程socket

Question

socket通信怎么传进度条从1--100
在传递信息是const char而定义的是char，怎么用循环去传递这个信息从服务端到客户端

Answer 1

不知道你这个问题是否已经解决, 如果还没有解决的话:

• 看下这篇博客，也许你就懂了，链接：TCP-socket异常情况
• 除此之外, 这篇博客: 糖儿飞教你学C++ Socket网络编程——8. 异步通信版的TCP通信程序中的 4.2.1 服务器端程序制作步骤 部分也许能够解决你的问题, 你可以仔细阅读以下内容或者直接跳转源博客中阅读:
  

  1）新建工程，选择“Win32 Application”，输入工程名（如TCPAsync_Server），然后选择“一个典型的Hello World程序”。

  2）在左侧选择FileView选项卡，找到对应的源文件（如TCPAsync_Server.cpp），将WinMain函数中DialogBox一行（148行）和return 0; 保留，其他代码全部删除，再将DialogBox中第3个参数HWnd改为NULL。

  3）切换到ResourceView选项卡，找到Dialog下的“IDD_ABOUTBOX”，将对话框的界面及各个控件的ID值设置为如图4-2所示。

  图4-2 对话框的界面及各控件ID值

  4）打开TCPAsync_Server.cpp文件，编写如下代码：

  #include "stdafx.h"

  #include "resource.h"

  #include "stdio.h"

  #include "WINSOCK2.h"

  #include <time.h>

  #pragma comment(lib,"ws2_32.lib")

   

  #define WM_SOCKET WM_USER+0x10    //自定义socket消息

  HINSTANCE hInst;             

  LRESULT CALLBACK  About(HWND, UINT, WPARAM, LPARAM);

  SOCKET sockSer,sockConn;

  SOCKADDR_IN addrSer, addrCli;

  int len =sizeof(SOCKADDR);

  char sendbuf[256], recvbuf[256];

  char clibuf[999]="客户端: >", serbuf[999]="服务器: >";

  int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,

     LPSTR  lpCmdLine,  int  nCmdShow){   

         DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, NULL, (DLGPROC)About);

         return 0;

  }

  LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam){

         char port[5],ip[16];

         time_t tt = time(NULL);        //这句返回的只是一个时间cuo

         tm* t= localtime(&tt);

         char szTime[20];           //用来保存时间

         switch (message)   {

         case WM_INITDIALOG:

                SetDlgItemText(hDlg,IDC_IP,"127.0.0.1");

                SetDlgItemText(hDlg,IDC_PORT,"5566");

                WSADATA wsaData;           

                if(WSAStartup(MAKEWORD(2,2), &wsaData)) {

                       MessageBox(hDlg,"Winsock加载失败","警告",0);

                       WSACleanup();

                       return -1;        }           

                sockSer=socket(AF_INET,SOCK_STREAM,0);

         //设置异步方式

  WSAAsyncSelect(sockSer, hDlg,WM_SOCKET,FD_ACCEPT |FD_READ | FD_CLOSE);

                return TRUE;

               

         case WM_SOCKET:   //自定义消息        

                switch (WSAGETSELECTEVENT(lParam)) {    //选择要处理的事件

                case FD_ACCEPT:{   //接收请求事件                          

                       sockConn=accept(sockSer,(SOCKADDR*) &addrCli,&len);                              }

                       break;

                case FD_READ:  {            //可读事件                  

                              recv(sockConn,recvbuf,256,0);   //接收消息

                              strcat(clibuf,recvbuf);

                       //将接收到的消息添加到列表框中

         SendDlgItemMessage(hDlg,IDC_RECVBUF,LB_ADDSTRING,0,(LPARAM)clibuf);

                              strcpy(clibuf, "客户端: >"); }      //重新给字符串赋值                  

                       break;                  

                case FD_CLOSE: { //关闭连接事件               

                       MessageBoxA(NULL, "正常关闭连接", "tip", 0);       }                                

                       break;            }           

          break;

               

                case WM_COMMAND:               {

                              switch(LOWORD(wParam) )

                              { case IDC_QUIT:        //单击了退出按钮

                              EndDialog(hDlg, LOWORD(wParam));

                              closesocket(sockSer);

                              WSACleanup();

                              return TRUE;

                             

                              case IDC_CREATE:              //单击了创建服务器按钮

                                     GetDlgItemText(hDlg,IDC_IP,ip,16);

                                     GetDlgItemText(hDlg,IDC_PORT,port,5);

                EnableWindow(GetDlgItem(hDlg,IDC_CREATE),FALSE);  //使该按钮失效

                                     addrSer.sin_family=AF_INET;

                                     addrSer.sin_port=htons(atoi(port));

                                     addrSer.sin_addr.S_un.S_addr=inet_addr(ip);

                                     bind(sockSer,(SOCKADDR*) &addrSer,len);

                                     listen(sockSer,5);  

                                     break;

                                    

                              case IDC_SEND:                 //单击了发送按钮        

                sprintf(szTime,"   %02d:%02d:%02d",  t->tm_hour, t->tm_min, t->tm_sec);

                       GetDlgItemText(hDlg,IDC_SENDBUF,sendbuf,256);

                       strcat(sendbuf,szTime);

                       send(sockConn,sendbuf,strlen(sendbuf)+1,0);     //发送带时间的消息

                       SetDlgItemText(hDlg,IDC_SENDBUF,NULL);

                       strcat(serbuf,sendbuf);

         SendDlgItemMessage(hDlg,IDC_RECVBUF,LB_ADDSTRING,0,(LPARAM)serbuf);

                       strcpy(serbuf, "服务器: >");  //重新给字符串赋值

                       break;     }            }

                       break;     }

      return FALSE;        }

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