一个小笔记(2):Socket网络编程
2016-07-09 00:42
453 查看
网络通信的流程:
服务器端
申请套接字 -> 绑定套接字到本地,打开端口 -> 监听端口 -> 等待接受消息 -> 有消息之后,读取消息
客户端
申请套接字 -> 向服务端发起连接 -> 连接成功后,可以随时发送消息
啥是套接字?
http://baike.baidu.com/link?url=BfywKEhH0b4vASGaFSZw9Dwwh2hQgV2DdE4POM2_5Xl80RK1_2hbH3YFQaFzfrxKeqh8SbcMcgRTP-Wj88Zb5a
简单的一个服务器与一个客户端的连接,客户端发送消息,服务器接收消息
使用控制台运行程序,通过启动参数:c或者s来运行客户端或者服务器程序
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/d510c30650f96573018fca4b6f0d000e.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/ffae30e6ac8cc4222b7869b70f628d40.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/c71f95b779232b56e9b5b93e34d4265f.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/4a68f239fc683ea911fe629d84c36f2d.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/82260a76b52e6e302f11bd470a7e9248.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/a95f265f71bd39c47733d65761d64b92.png)
相关函数的查询:
int
WSAAPI
WSAStartup(
_In_ WORD wVersionRequested,
_Out_ LPWSADATA lpWSAData
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2FWSAStartup);k(WSAStartup);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
WSACleanup(
void
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2FWSACleanup);k(WSACleanup);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
SOCKET
WSAAPI
socket(
_In_ int af,
_In_ int type,
_In_ int protocol
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fsocket);k(socket);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
closesocket(
_In_ SOCKET s
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fclosesocket);k(closesocket);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
bind(
_In_ SOCKET s,
_In_reads_bytes_(namelen) const struct sockaddr FAR * name,
_In_ int namelen
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fbind);k(bind);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
listen(
_In_ SOCKET s,
_In_ int backlog
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Flisten);k(listen);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
SOCKET
WSAAPI
accept(
_In_ SOCKET s,
_Out_writes_bytes_opt_(*addrlen) struct sockaddr FAR * addr,
_Inout_opt_ int FAR * addrlen
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Faccept);k(accept);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
recv(
_In_ SOCKET s,
_Out_writes_bytes_to_(len, return) __out_data_source(NETWORK) char FAR * buf,
_In_ int len,
_In_ int flags
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Frecv);k(recv);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
connect(
_In_ SOCKET s,
_In_reads_bytes_(namelen) const struct sockaddr FAR * name,
_In_ int namelen
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fconnect);k(connect);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
u_long
WSAAPI
htonl(
_In_ u_long hostlong
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fhtonl);k(htonl);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
u_short
WSAAPI
htons(
_In_ u_short hostshort
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fhtons);k(htons);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
服务器端
申请套接字 -> 绑定套接字到本地,打开端口 -> 监听端口 -> 等待接受消息 -> 有消息之后,读取消息
客户端
申请套接字 -> 向服务端发起连接 -> 连接成功后,可以随时发送消息
啥是套接字?
http://baike.baidu.com/link?url=BfywKEhH0b4vASGaFSZw9Dwwh2hQgV2DdE4POM2_5Xl80RK1_2hbH3YFQaFzfrxKeqh8SbcMcgRTP-Wj88Zb5a
简单的一个服务器与一个客户端的连接,客户端发送消息,服务器接收消息
使用控制台运行程序,通过启动参数:c或者s来运行客户端或者服务器程序
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/d510c30650f96573018fca4b6f0d000e.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/ffae30e6ac8cc4222b7869b70f628d40.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/c71f95b779232b56e9b5b93e34d4265f.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/4a68f239fc683ea911fe629d84c36f2d.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/82260a76b52e6e302f11bd470a7e9248.png)
![](https://oscdn.geek-share.com/Uploads/Images/Content/202012/07/a95f265f71bd39c47733d65761d64b92.png)
相关函数的查询:
int
WSAAPI
WSAStartup(
_In_ WORD wVersionRequested,
_Out_ LPWSADATA lpWSAData
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2FWSAStartup);k(WSAStartup);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
WSACleanup(
void
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2FWSACleanup);k(WSACleanup);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
SOCKET
WSAAPI
socket(
_In_ int af,
_In_ int type,
_In_ int protocol
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fsocket);k(socket);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
closesocket(
_In_ SOCKET s
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fclosesocket);k(closesocket);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
bind(
_In_ SOCKET s,
_In_reads_bytes_(namelen) const struct sockaddr FAR * name,
_In_ int namelen
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fbind);k(bind);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
listen(
_In_ SOCKET s,
_In_ int backlog
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Flisten);k(listen);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
SOCKET
WSAAPI
accept(
_In_ SOCKET s,
_Out_writes_bytes_opt_(*addrlen) struct sockaddr FAR * addr,
_Inout_opt_ int FAR * addrlen
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Faccept);k(accept);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
recv(
_In_ SOCKET s,
_Out_writes_bytes_to_(len, return) __out_data_source(NETWORK) char FAR * buf,
_In_ int len,
_In_ int flags
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Frecv);k(recv);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
int
WSAAPI
connect(
_In_ SOCKET s,
_In_reads_bytes_(namelen) const struct sockaddr FAR * name,
_In_ int namelen
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fconnect);k(connect);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
u_long
WSAAPI
htonl(
_In_ u_long hostlong
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fhtonl);k(htonl);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
u_short
WSAAPI
htons(
_In_ u_short hostshort
);
MSDN:
https://msdn.microsoft.com/query/dev14.query?appId=Dev14IDEF1&l=ZH-CN&k=k(WinSock2%2Fhtons);k(htons);k(DevLang-C%2B%2B);k(TargetOS-Windows)&rd=true
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