没能听winock2 [英] failed to listen winsock2

查看:79
本文介绍了没能听winock2的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

任何人请帮助我。

以下代码的输出是;


开始... 
:可比较......
:创建...
:绑定完成.. 。
:CAn不听...
:连接错误...
::: Cleaned :::





  void  serverFrm :: serverClick(wxCommandEvent&  event 
{
SOCKET sockh,socka;
WSADATA wsadata;
sockaddr_in sockAddr;

if (WSAStartup(MAKEWORD( 2 2 ),& wsadata)== 0
{
box-> AppendText(_( :Starting ... \ n));
}
if (LOBYTE(wsadata.wVersion)> = 2
{
box-> AppendText(_( :Compatable ... \ n));
}
sockh = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
if (sockh!= SOCKET_ERROR)
{
box-> AppendText(_( :Created ... \ n));
} else box-> AppendText(_( :连接错误... \ n));
sockAddr.sin_family = AF_INET;
sockAddr.sin_port = htons( 7777 );
sockAddr.sin_addr.S_un.S_addr = inet_addr( 127.0.0.1);
if (bind(sockh,(sockaddr *)(& sockAddr), sizeof ( sockAddr))!= SOCKET_ERROR)
{
box-> AppendText(_( :Binding Done ... \ n));
} else box-> AppendText(_( :绑定错误... \ n));
if (listen(sockh,SOMAXCONN)!= 0
{
box-> AppendText(_( :Listening ... \ n));
} else box-> AppendText(_( :CAn not listen ... \ n));
int siz = sizeof (sockh);
if (accept(sockh,reinterpret_cast< sockaddr *>(& sockAddr),& siz)!= SOCKET_ERROR)
{
box-> AppendText(_( :已连接... \ n));
} else box-> AppendText(_( :连接错误... \ n));
closesocket(sockh);
if (WSACleanup()== 0
box-> AppendText(_( ::: Cleaned ::: \ n));
}

解决方案

您最初应该清除 sockaddr_in 结构:

 :: ZeroMemory(& sockAddr,sizeof(sockaddr_in)); 



结构包含 sin_zero 成员(注意名称)包含8个字符,其大小与 sockaddr 相同,这是传递给的参数类型结合。如果未清除这些填充字节,则可能存在错误或未定义的行为。


此行存在问题。

int siz = sizeof(sockh);

这个siz必须是struct sockaddr_in。

int siz = sizeof(sockaddr);

它运作良好。感谢

Any One Help Me Please.
Ouput of the following code is;

Starting...
 : Compatable...
 : Created...
 : Binding Done...
 :CAnnot listen...
 :Error connecting...
:::Cleaned:::



 void serverFrm::serverClick(wxCommandEvent& event)
 {
 SOCKET sockh,socka;
 WSADATA wsadata;
 sockaddr_in sockAddr;

 if(WSAStartup(MAKEWORD(2,2), &wsadata)==0)
 {
 box-> AppendText(_(" : Starting...\n"));
 }
 if(LOBYTE(wsadata.wVersion)>=2)
 {
 box-> AppendText(_(" : Compatable...\n"));
 }
      sockh=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
      if(sockh!=SOCKET_ERROR)
      {
 box-> AppendText(_(" : Created...\n"));
           }else box-> AppendText(_(" :Error connecting...\n"));
      sockAddr.sin_family = AF_INET;
sockAddr.sin_port = htons(7777);
sockAddr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
if(bind(sockh, (sockaddr*)(&sockAddr), sizeof(sockAddr))!=SOCKET_ERROR)
{
 box-> AppendText(_(" : Binding Done...\n"));
       }else box-> AppendText(_(" :Error binding...\n"));
      if(listen(sockh, SOMAXCONN)!=0)
      {
 box-> AppendText(_(" :Listening...\n"));
           }else box-> AppendText(_(" :CAnnot listen...\n"));
 int siz=sizeof(sockh);
 if(accept(sockh,reinterpret_cast<sockaddr*>(&sockAddr),&siz)!=SOCKET_ERROR)
           {
 box-> AppendText(_(" :Connected...\n"));
                } else box-> AppendText(_(" :Error connecting...\n"));
  closesocket(sockh);
 if(WSACleanup()==0)
 box-> AppendText(_(":::Cleaned:::\n"));
 }

解决方案

You should initially clear sockaddr_in structures:

::ZeroMemory(&sockAddr, sizeof(sockaddr_in));


The structure contains the sin_zero member (note the name) containing 8 characters to have the same size as sockaddr which is the parameter type passed to bind. If these padding bytes are not cleared, there may be errors or undefined behaviour.


There was a problem with this line.
int siz=sizeof(sockh);
this siz must be of struct sockaddr_in.
int siz=sizeof(sockaddr);
and it is working well. thanks


这篇关于没能听winock2的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆