C#与C利用socket通信源码

#include <stdio.h> #include <WinSock2.h> #include <ws2tcpip.h> typedef struct _po { int socket; char port_flag[3]; char reserve[1]; int port; char port_reserve[4]; int des; char des_ip[32]; }kkkkkk; #pragma pack(1) typedef struct _login { int port; char username[8]; char password[5]; }Login; #pragma int Port; unsigned __stdcall test(void *param) { SOCKET tmp; kkkkkk *s1=NULL; Login *lgi=NULL; int length=0; s1=(kkkkkk *)malloc(sizeof(kkkkkk)); if (s1==NULL){ printf("malloc failed %d\r\n",__LINE__); return -1; } lgi=(Login *)malloc(sizeof(Login)); if(lgi==NULL){ printf("malloc failed %d\r\n",__LINE__); return -1; } memset(s1,'\0',sizeof(kkkkkk)); memset(lgi,'\0',sizeof(Login)); tmp=(SOCKET)param; strcpy(lgi->username,"tset"); strcpy(lgi->password,"pass"); send(tmp,lgi,sizeof(Login),0); } int main() { WSADATA wsaData; SOCKET listener; SOCKET client; SOCKADDR_IN address; int returned; SOCKADDR_IN from; int iResult; int len; kkkkkk *ss=NULL; int port=0; HANDLE status; ss=(kkkkkk *)malloc(sizeof(kkkkkk)); if(ss==NULL){ printf("malloc failed\r\n"); return -1; } iResult = WSAStartup(MAKEWORD(2,2), &wsaData); if (iResult != 0) { printf("WSAStartup failed: %d\n", iResult); return 1; } listener=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); if(listener!=INVALID_SOCKET) { address.sin_family=AF_INET; address.sin_port=htons(8888); address.sin_addr.S_un.S_addr=htonl(ADDR_ANY); returned=bind(listener,(SOCKADDR*)&address,sizeof(address)); if (returned!=SOCKET_ERROR) { listen(listener,100); while(TRUE) { len=sizeof(from); client=accept(listener,(SOCKADDR*)&from,&len); if(client!=INVALID_SOCKET){ memset(ss,'\0',sizeof(kkkkkk)); if (recv(client,ss,sizeof(kkkkkk),0)<=0){ closesocket(client); continue; } if (strcmp(ss->port_flag,"kl")==0){ printf("bb"); port=ss->port; } switch(port){ case 1: printf("1\r\n"); status=(HANDLE)_beginthreadex(NULL,0,test,(LPVOID)client,0,NULL); if (0==status){ printf("Error in BkPassiveListenerProc!\r\n"); } CloseHandle(status); break; } } } } } }