基于Windows的多线程UDP通信（VS2010）

    由于各种原因，需要在Windows下面实现一个关于UDP通信的模块，使用线程去处理数据接收和发送的功能。

main.cpp

 

extern "C" { #include "udpMediaService.h" }   #include <windows.h> #include <string> #include <vector> #include <time.h>   using namespace std ;   bool FindOrCreateDirectory ( const char * pszPath ) { WIN32_FIND_DATA fd ; HANDLE hFind = :: FindFirstFile ( pszPath , & fd ); while ( hFind != INVALID_HANDLE_VALUE ) { if ( fd . dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY ) return true ; }   if ( !:: CreateDirectory ( pszPath , NULL ) ) { //char szDir[MAX_PATH]; //sprintf_s( szDir, sizeof(szDir), "创建目录[%s]失败,请检查权限", pszPath ); //Output("the error is %s", szDir); //return false; }   return true ; }   // 遍历目录 bool CheckDirectory ( char * pszPath ) { vector < std :: string > vtPath ;   const char * sep = " \\ /" ; char * next_token ; char * token = strtok_s ( pszPath , sep , & next_token ); while ( token != NULL ) { vtPath . push_back ( token ); token = strtok_s ( NULL , sep , & next_token ); }   if ( vtPath . size () > 0 ) { if ( vtPath [ 0 ] == "." ) vtPath . erase ( vtPath . begin () ); }   // 核查所有路径是否存在 std :: string strCurPath ; for ( size_t i = 0 ; i < ( int ) vtPath . size (); ++ i ) { strCurPath += vtPath [ i ]; strCurPath += '\\' ;   if ( ! FindOrCreateDirectory ( strCurPath . c_str () ) ) { return false ; } }   return true ; }   DWORD WINAPI mediaRecvPthread ( LPVOID pM ) { char buffer [ BUFFER_SIZE ] = { 0 }; int mediaRecvLen = - 1 ; int mediaRecvStatus = 1 ; char mediaPath [ 128 ] = { 0 }; int err ; BOOL bDontLinger = FALSE ; BOOL bReuseaddr = TRUE ; int nNetTimeout = TIME ; //阻塞 int recvAddrLen = 0 ; char localip [ 20 ]; char filePath [ 128 ] = { 0 }; MEDIAPATH * mediaValue = ( MEDIAPATH * ) pM ; int port = atoi ( mediaValue -> mediaValue ); memcpy ( filePath , mediaValue -> filePath , sizeof ( mediaValue -> filePath )); //unsigned long ul = 1; SOCKET mediaRecvSock ; struct sockaddr_in mediaRecvAddr ; struct sockaddr_in mediaRecvFromAddr ; WSADATA wsaData ; WSAStartup ( MAKEWORD ( 2 , 2 ), & wsaData ); printf ( "port is %d. \n " , port ); printf ( "filePath is %s. \n " , filePath ); mediaRecvSock = socket ( AF_INET , SOCK_DGRAM , IPPROTO_UDP ); //if (SOCKET_ERROR == ioctlsocket(recvSocket, FIONBIO, (unsigned long *)&ul)) //设置成非阻塞函数 //{ // printf("ioctlsocket fiald\n"); // return -1; //}   memset ( & mediaRecvAddr , 0 , sizeof ( recvAddr )); mediaRecvAddr . sin_family = AF_INET ; mediaRecvAddr . sin_addr . S_un . S_addr = htonl ( INADDR_ANY ); //mediaRecvAddr.sin_addr.S_un.S_addr = inet_addr(SERVERIP); mediaRecvAddr . sin_port = htons ( port ); recvAddrLen = sizeof ( mediaRecvAddr );   if ( 0 != bind ( mediaRecvSock , ( SOCKADDR * ) & mediaRecvAddr , recvAddrLen )) { printf ( "mediaRecvInit Bind filed! \n " ); return - 1 ; }   setsockopt ( mediaRecvSock , SOL_SOCKET , SO_DONTLINGER , ( const char * ) & bDontLinger , sizeof ( BOOL )); setsockopt ( mediaRecvSock , SOL_SOCKET , SO_REUSEADDR , ( const char * ) & bReuseaddr , sizeof ( BOOL )); setsockopt ( mediaRecvSock , SOL_SOCKET , SO_RCVTIMEO , ( const char * ) & nNetTimeout , sizeof ( BOOL ));   FILE * mediaFp = fopen ( filePath , "wb" );   while ( mediaRecvStatus ) { mediaRecvLen = recvfrom ( mediaRecvSock , buffer , sizeof ( buffer ), 0 , ( SOCKADDR * ) & mediaRecvFromAddr , & recvAddrLen );   if ( mediaRecvLen = SOCKET_ERROR ) { err = WSAGetLastError (); if ( err == WSAEWOULDBLOCK ) { continue ; } else if ( err == WSAETIMEDOUT ) //超时 { printf ( "recv timeout \n " ); break ; } else if ( err == WSAENETDOWN ) //连接断开 { printf ( "recv connection break \n " ); break ; } else //其他错误 printf ( "other error \n " ); break ; } else { fwrite ( buffer , sizeof ( char ), mediaRecvLen , mediaFp ); } } fclose ( mediaFp ); closesocket ( mediaRecvSock ); WSACleanup ();   return 0 ; }   //XXX:使用带头结点的单向链表 存放用户信息   int memoryError ( USERINFO * p ) //判断内存是否申请成功 { if ( p == NULL ) { printf ( "MEMORY ERROR!" ); return 1 ; } return 0 ; }   int creatUserList ( USERINFO * head ) { if ( memoryError ( head )) return - 1 ; head -> next = NULL ; }   int addUser ( USERINFO * head , MEDIAINFO data ) //始终在表头插入 { USERINFO * new_create = ( USERINFO * ) malloc ( sizeof ( USERINFO )); if ( memoryError ( new_create )) return - 1 ; new_create -> mediaInfo = data ; new_create -> next = head -> next ; head -> next = new_create ; }   int delUser ( USERINFO * head , char name [ 10 ]) { USERINFO * q = head ; USERINFO * p = head -> next ; while ( p != NULL ) { if ( strcmp (( p -> mediaInfo ). uid , name ) == 0 ) break ; q = p ; p = p -> next ; } if ( p == NULL ) { printf ( "删除用户失败 \n " ); return - 1 ; } q -> next = p -> next ; free ( p ); p = NULL ; }   int findUser ( USERINFO * head , char name [ 10 ]) { USERINFO * p = head -> next ; while ( p != NULL ) { if ( strcmp (( p -> mediaInfo ). uid , name ) == 0 ) return 0 ; p = p -> next ; } if ( p == NULL ) return - 1 ; }   int getMediaPort () { SOCKET s ; int port ; struct sockaddr_in addr ;   s = socket ( AF_INET , SOCK_DGRAM , IPPROTO_UDP );   memset ( & addr , 0 , sizeof ( addr ));   addr . sin_family = AF_INET ; addr . sin_addr . S_un . S_addr = htonl ( INADDR_ANY ); for ( port = 5500 ; port < 65535 ; port ++ ) { addr . sin_port = htons ( port ); if ( 0 == bind ( s , ( struct sockaddr * ) & addr , sizeof ( addr ))) { break ; } } closesocket ( s );   return port != 65535 ? port : - 1 ; }   int getNowTime ( char * nowTime ) { char acYear [ 5 ] = { 0 }; char acMonth [ 5 ] = { 0 }; char acDay [ 5 ] = { 0 }; char acHour [ 5 ] = { 0 }; char acMin [ 5 ] = { 0 }; char acSec [ 5 ] = { 0 };   time_t now ; struct tm * timenow ;   time ( & now ); timenow = localtime ( & now );   strftime ( acYear , sizeof ( acYear ), "%Y" , timenow ); strftime ( acMonth , sizeof ( acMonth ), "%m" , timenow ); strftime ( acDay , sizeof ( acDay ), "%d" , timenow ); strftime ( acHour , sizeof ( acHour ), "%H" , timenow ); strftime ( acMin , sizeof ( acMin ), "%M" , timenow ); strftime ( acSec , sizeof ( acSec ), "%S" , timenow );   strncat ( nowTime , acYear , 4 ); strncat ( nowTime , acMonth , 2 ); strncat ( nowTime , acDay , 2 ); strncat ( nowTime , acHour , 2 ); strncat ( nowTime , acMin , 2 ); strncat ( nowTime , acSec , 2 );   return 0 ; }   int changeStr ( const char * str1 , const char * str2 , const char * str3 , const char * str4 , char * outstr ) { strncat ( outstr , str1 , strlen ( str1 )); strncat ( outstr , "//" , 2 ); strncat ( outstr , str2 , strlen ( str2 )); strncat ( outstr , str3 , strlen ( str3 )); strncat ( outstr , str4 , strlen ( str4 ));   return 0 ; }   //DWORD WINAPI ThreadFun(LPVOID pM) //{ // printf("子线程ID号为：%d\n", GetCurrentThreadId()); // return 0; //}   int mediaRecvPthreadInit ( MEDIAPATH * mediaValue ) { HANDLE mediaRecvHandle = NULL ; mediaRecvHandle = CreateThread ( NULL , 0 , mediaRecvPthread , mediaValue , 0 , NULL ); if ( NULL == mediaRecvHandle ) { printf ( "Create Thread mediaRecvPthread error \n " ); return - 1 ; } else { printf ( "Create Thread mediaRecvPthread successfully \n " ); //WaitForSingleObject(mediaRecvHandle, INFINITE); WaitForSingleObject ( mediaRecvHandle , 50 ); } return 0 ; //WaitForMultipleObjects(THREAD_NUM, (const HANDLE *)mediaRecvHandle, TRUE, INFINITE); }   //static void filesearch(char const* path) //{ // struct _finddata_t filefind; // String curr = String(path) + "\\*.*"; // char tmp[128] = {0}; // char video_path[64] = {0}; // int done = 0, i, handle, j = 0, ret = -1, count = 0; // char filename[50][32] = {0}; // if((handle=_findfirst(curr.c_str(),&filefind))==-1)return; // while(!(done=_findnext(handle,&filefind))) // { // if(!strcmp(filefind.name,".."))continue; // if ((_A_SUBDIR==filefind.attrib)) // { // //cout<<filefind.name<<"(dir)"<<endl; // curr=String(path) + "\\"; // filesearch(curr); // } // else // { // //cout<<filefind.name<<endl; // if (NULL != strstr(filefind.name, ".avi")) // { // memcpy(filename[count], filefind.name, strlen(filefind.name)); // //Output("%d:%s\n", count, filename[count]); // count++; // } // } // } // if (count > file_count) // { // for (i = 0; i < count - file_count ; i++) // { // //Output("%d:%s\n", i, filename[i]); // curr=String(path) + "//" + filename[i]; // ret = remove(curr.c_str()); // memcpy(tmp, curr.c_str(), curr.length()); // memcpy(video_path, tmp + 56, 36); // //strncat(video_path, ".mp4", 4); // //Output("11111111111111the video_path is %s", video_path); // //del((const char *)video_path); // } // } // // _findclose(handle); //}   int changePath ( char * uid , char * path ) { char comNum [ 2 ] = { 0 }; char banNum [ 4 ] = { 0 }; char houNum [ 4 ] = { 0 };   memcpy ( comNum , uid , 2 ); memcpy ( banNum , uid + 2 , 4 ); memcpy ( houNum , uid + 6 , 4 );   strcat ( path , "./apache-tomcat-7.0.37//webapps//FamilyGuardian//video//" ); strncat ( path , comNum , 2 ); strcat ( path , "//" ); strncat ( path , banNum , 4 ); strcat ( path , "//" ); strncat ( path , houNum , 4 );   return 0 ; }   int createMediaPath ( char * uid , char * path ) { char tmpPath [ 128 ] = { 0 };   changePath ( uid , path ); memcpy ( tmpPath , path , sizeof ( tmpPath )); CheckDirectory ( tmpPath );   return 0 ; }   int mediaServiceStart ( MEDIAINFO * mediaInfo , char * filePath ) { int mediaRecvPort = 0 ; MEDIAPATH mediaPath = { 0 }; char nowTime [ 32 ] = { 0 }; char path [ 128 ] = { 0 };   getNowTime ( nowTime ); //strncat(filePath, nowTime, strlen(nowTime)); //memcpy(mediaPath.filePath, filePath, strlen(filePath) + 1); if ( ! strncmp ( mediaInfo -> audio , "audio" , 5 )) { mediaRecvPort = getMediaPort (); memset ( mediaInfo -> audio , 0 , sizeof ( mediaInfo -> audio )); itoa ( mediaRecvPort , mediaInfo -> audio , 10 ); memcpy ( mediaPath . mediaValue , mediaInfo -> audio , sizeof ( mediaInfo -> audio )); memset ( path , 0 , sizeof ( path )); changeStr ( filePath , "00" , nowTime , ".wav" , path ); memcpy ( mediaPath . filePath , path , strlen ( path ) + 1 ); mediaRecvPthreadInit ( & mediaPath ); printf ( "mediaRecvPort is %d, mediaInfo->audio is %s. \n " , mediaRecvPort , mediaInfo -> audio ); }   if ( ! strncmp ( mediaInfo -> video0 , "video0" , 6 )) { mediaRecvPort = getMediaPort (); memset ( mediaInfo -> video0 , 0 , sizeof ( mediaInfo -> video0 )); itoa ( mediaRecvPort , mediaInfo -> video0 , 10 ); memcpy ( mediaPath . mediaValue , mediaInfo -> video0 , sizeof ( mediaInfo -> video0 )); memset ( path , 0 , sizeof ( path )); changeStr ( filePath , "00" , nowTime , ".dat" , path ); memcpy ( mediaPath . filePath , path , strlen ( path ) + 1 ); mediaRecvPthreadInit ( & mediaPath );   printf ( "mediaRecvPort is %d, mediaInfo->video0 is %s. \n " , mediaRecvPort , mediaInfo -> video0 ); }   if ( ! strncmp ( mediaInfo -> video1 , "video1" , 6 )) { mediaRecvPort = getMediaPort (); memset ( mediaInfo -> video1 , 0 , sizeof ( mediaInfo -> video1 )); itoa ( mediaRecvPort , mediaInfo -> video1 , 10 ); memcpy ( mediaPath . mediaValue , mediaInfo -> video1 , sizeof ( mediaInfo -> video1 )); memset ( path , 0 , sizeof ( path )); changeStr ( filePath , "01" , nowTime , ".dat" , path ); memcpy ( mediaPath . filePath , path , strlen ( path ) + 1 ); mediaRecvPthreadInit ( & mediaPath ); printf ( "mediaRecvPort is %d, mediaInfo->video1 is %s. \n " , mediaRecvPort , mediaInfo -> video1 ); }   if ( ! strncmp ( mediaInfo -> video2 , "video2" , 6 )) { mediaRecvPort = getMediaPort (); memset ( mediaInfo -> video2 , 0 , sizeof ( mediaInfo -> video1 )); itoa ( mediaRecvPort , mediaInfo -> video2 , 10 ); memcpy ( mediaPath . mediaValue , mediaInfo -> video2 , sizeof ( mediaInfo -> video2 )); memset ( path , 0 , sizeof ( path )); changeStr ( filePath , "02" , nowTime , ".dat" , path ); memcpy ( mediaPath . filePath , path , strlen ( path ) + 1 ); mediaRecvPthreadInit ( & mediaPath ); printf ( "mediaRecvPort is %d, mediaInfo->video2 is %s. \n " , mediaRecvPort , mediaInfo -> video2 ); }   if ( ! strncmp ( mediaInfo -> video3 , "video3" , 6 )) { mediaRecvPort = getMediaPort (); memset ( mediaInfo -> video3 , 0 , sizeof ( mediaInfo -> video3 )); itoa ( mediaRecvPort , mediaInfo -> video3 , 10 ); memcpy ( mediaPath . mediaValue , mediaInfo -> video3 , sizeof ( mediaInfo -> video3 )); memset ( path , 0 , sizeof ( path )); changeStr ( filePath , "03" , nowTime , ".dat" , path ); memcpy ( mediaPath . filePath , path , strlen ( path ) + 1 ); mediaRecvPthreadInit ( & mediaPath ); printf ( "mediaRecvPort is %d, mediaInfo->video3 is %s. \n " , mediaRecvPort , mediaInfo -> video3 ); } printf ( "uid is %s. \n " , mediaInfo -> uid ); printf ( "audio is %s. \n " , mediaInfo -> audio ); printf ( "video0 is %s. \n " , mediaInfo -> video0 ); printf ( "video1 is %s. \n " , mediaInfo -> video1 ); printf ( "video2 is %s. \n " , mediaInfo -> video2 ); printf ( "video3 is %s. \n " , mediaInfo -> video3 ); return 0 ; }   DWORD WINAPI mediaServicePthread ( LPVOID pM ) { BOOL bDontLinger = FALSE ; BOOL bReuseaddr = TRUE ; //int nNetTimeout = TIME; //阻塞 int recvAddrLen = 0 ; char localip [ 20 ]; int recvLength = - 1 ; int sendLength = - 1 ; int recvAddrSize = sizeof ( recvFromAddr ); char recvBuffer [ BUFFER_SIZE ] = { 0 }; char filePath [ 128 ] = { 0 }; MEDIAINFO mediaInfo = { 0 }; //USERINFO *userInfoHead = NULL; //unsigned long ul = 1; WSADATA wsaData ; WSAStartup ( MAKEWORD ( 2 , 2 ), & wsaData );   recvSocket = socket ( AF_INET , SOCK_DGRAM , IPPROTO_UDP ); //if (SOCKET_ERROR == ioctlsocket(recvSocket, FIONBIO, (unsigned long *)&ul)) //设置成非阻塞函数 //{ // printf("ioctlsocket fiald\n"); // return -1; //}   memset ( & recvAddr , 0 , sizeof ( recvAddr )); recvAddr . sin_family = AF_INET ; //recvAddr.sin_addr.S_un.S_addr = htonl(INADDR_ANY); recvAddr . sin_addr . S_un . S_addr = inet_addr ( SERVERIP ); recvAddr . sin_port = htons ( SERVERPORT ); recvAddrLen = sizeof ( recvAddr );   if ( 0 != bind ( recvSocket , ( SOCKADDR * ) & recvAddr , recvAddrLen )) { printf ( "mediaRecvInit Bind filed! \n " ); return - 1 ; }   setsockopt ( recvSocket , SOL_SOCKET , SO_DONTLINGER , ( const char * ) & bDontLinger , sizeof ( BOOL )); setsockopt ( recvSocket , SOL_SOCKET , SO_REUSEADDR , ( const char * ) & bReuseaddr , sizeof ( BOOL )); //setsockopt(recvSocket, SOL_SOCKET, SO_RCVTIMEO, (const char*)&nNetTimeout, sizeof(BOOL));   mediaServiceStatus = 1 ;   while ( mediaServiceStatus ) { memset ( recvBuffer , 0 , sizeof ( recvBuffer )); recvLength = recvfrom ( recvSocket , recvBuffer , sizeof ( recvBuffer ), 0 , ( SOCKADDR * ) & recvFromAddr , & recvAddrSize );   recvBuffer [ recvLength ] = '\0' ;   if ( strncmp ( "Media" , recvBuffer , 5 )) { continue ; }   memcpy (( unsigned char * ) & mediaInfo , recvBuffer , recvLength ); mediaInfo . address = recvFromAddr ;   //printf("uid is %s.\n", mediaInfo.uid); //printf("audio is %s.\n", mediaInfo.audio); //printf("video0 is %s.\n", mediaInfo.video0); //printf("video1 is %s.\n", mediaInfo.video1); //printf("video2 is %s.\n", mediaInfo.video2); //printf("video3 is %s.\n", mediaInfo.video3);   if ( 0 != createMediaPath ( mediaInfo . uid , filePath )) { printf ( "create media path error \n " ); }   if ( 0 != mediaServiceStart ( & mediaInfo , filePath )) { printf ( "media service start error \n " ); }   memcpy ( recvBuffer , ( unsigned char * ) & mediaInfo , sizeof ( mediaInfo ));   sendLength = sendto ( recvSocket , recvBuffer , sizeof ( mediaInfo ), 0 , ( SOCKADDR * ) & recvFromAddr , recvAddrSize ); if ( 0 > sendLength ) { printf ( "send mediaInfo error \n " ); } } closesocket ( recvSocket ); WSACleanup ();   return 0 ; }   int mediaServicePthreadInit () { HANDLE mediaServiceHandle = NULL ; mediaServiceHandle = CreateThread ( NULL , NULL , mediaServicePthread , NULL , 0 , NULL ); if ( NULL == mediaServiceHandle ) { printf ( "CreatePthread mediaServicePthread error. \n " ); return - 1 ; } else { printf ( "CreatePthread mediaServicePthread successfully. \n " ); }   return 0 ; }   int tempFun () { int ret = - 1 ; //ret = mediaRecvPthreadInit(); ret = mediaServicePthreadInit (); if ( - 1 == ret ) { printf ( "mediaRecvPthreadInit faild \n " ); return - 1 ; } else { printf ( "mediaRecvPthreadInit successfully \n " ); }   return 0 ; }   int main ( int argc , char * argv []) { char cmd [ 10 ] = { 0 };   tempFun (); //Sleep(10000); while ( 1 ) { printf ( "input 'quit' closed. \n " ); scanf ( "%s" , cmd ); if ( ! strncmp ( cmd , "quit" , 4 )) { break ; } } system ( "pause" ); return 0 ; } udpMediaService.h

#ifndef UDPMEDIASERVICE_H #define UDPMEDIASERVICE_H   #include <stdio.h> #include <stdlib.h> #include <winsock2.h> #include <WS2tcpip.h>   #pragma comment(lib, "ws2_32.lib")   #define SERVERIP "192.168.1.77" #define SERVERPORT 7777 #define TIME 60*1000 #define BUFFER_SIZE 1500 #define THREAD_NUM 10   int mediaServiceStatus ; //int mediaRecvStatus = 0;   typedef struct media_info { char media [ 6 ]; char uid [ 11 ]; char audio [ 6 ]; char video0 [ 7 ]; char video1 [ 7 ]; char video2 [ 7 ]; char video3 [ 7 ]; struct sockaddr_in address ; } MEDIAINFO ;   typedef struct userList { MEDIAINFO mediaInfo ; struct userList * next ; } USERINFO ;   typedef struct mediaValueFilePath { char mediaValue [ 7 ]; char filePath [ 128 ]; } MEDIAPATH ;   SOCKET recvSocket ; struct sockaddr_in recvAddr ; struct sockaddr_in recvFromAddr , sendToRcevAddr ; SOCKET sendSocket ; struct sockaddr_in sendAddr ; struct sockaddr_in sendToAddr ;   int mediaRecvInit (); int mediaSendInit (); int mediaRecv ( char * buffer , int len ); int mediaSend ( char * buffer , int len ); int mediaRecvEixt ( void ); int mediaSendExit ( void );   int memoryError ( USERINFO * p ); int creatUserList ( USERINFO * head ); int findUser ( USERINFO * head , char name [ 10 ]); int delUser ( USERINFO * head , char name [ 10 ]); int getAllUser ( USERINFO const * head ); int addUser ( USERINFO * head , MEDIAINFO data );   int getMediaPort (); int getNowTime ( char * nowTime ); int changeStr ( const char * str1 , const char * str2 , const char * str3 , const char * str4 , char * outstr );   int mediaRecvPthreadInit ( MEDIAPATH * mediaValue ); DWORD WINAPI mediaRecvPthread ( LPVOID pM );   //bool FindOrCreateDirectory( const char* pszPath ); //bool CheckDirectory( char* pszPath );   int createMediaPath ( char * uid , char * path );   int mediaServiceStart ( MEDIAINFO * mediaInfo , char * filePath ); DWORD WINAPI mediaServicePthread ( LPVOID pM ); int mediaServicePthreadInit ();   #endif

 

测试代码是Linux下面编写的，就是发送一些数据过来。