基于C++的socket通信实例.docx

刚刚学windows编程，所以想写学习笔记，这是一个简单的Socket程序例子，开发环境是vc6：首先是TCPserver端：cppview plaincopy1. #includestdafx.h2. #include3. #include4. 5. #pragmacomment(lib,ws2_32.lib)6. 7. intmain(intargc,char*argv)8. 9. /初始化WSA10. WORDsockVersion=MAKEWORD(2,2);11. WSADATAwsaData;12. if(WSAStartup(sockVersion,&wsaData)!=0)13. 14. return0;15. 16. 17. /创建套接字18. SOCKETslisten=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);19. if(slisten=INVALID_SOCKET)20. 21. printf(socketerror!);22. return0;23. 24. 25. /绑定IP和端口26. sockaddr_insin;27. sin.sin_family=AF_INET;28. sin.sin_port=htons(8888);29. sin.sin_addr.S_un.S_addr=INADDR_ANY;30. if(bind(slisten,(LPSOCKADDR)&sin,sizeof(sin)=SOCKET_ERROR)31. 32. printf(binderror!);33. 34. 35. /开始监听36. if(listen(slisten,5)=SOCKET_ERROR)37. 38. printf(listenerror!);39. return0;40. 41. 42. /循环接收数据43. SOCKETsClient;44. sockaddr_inremoteAddr;45. intnAddrlen=sizeof(remoteAddr);46. charrevData255;47. while(true)48. 49. printf(等待连接.n);50. sClient=accept(slisten,(SOCKADDR*)&remoteAddr,&nAddrlen);51. if(sClient=INVALID_SOCKET)52. 53. printf(accepterror!);54. continue;55. 56. printf(接受到一个连接：%srn,inet_ntoa(remoteAddr.sin_addr);57. 58. /接收数据59. intret=recv(sClient,revData,255,0);60. if(ret0)61. 62. revDataret=0x00;63. printf(revData);64. 65. 66. /发送数据67. char*sendData=你好，TCP客户端！n;68. send(sClient,sendData,strlen(sendData),0);69. closesocket(sClient);70. 71. 72. closesocket(slisten);73. WSACleanup();74. return0;75. client端：cppview plaincopy1. #includestdafx.h2. #include3. #include4. 5. #pragmacomment(lib,ws2_32.lib)6. 7. 8. intmain(intargc,char*argv)9. 10. WORDsockVersion=MAKEWORD(2,2);11. WSADATAdata;12. if(WSAStartup(sockVersion,&data)!=0)13. 14. return0;15. 16. 17. SOCKETsclient=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);18. if(sclient=INVALID_SOCKET)19. 20. printf(invalidsocket!);21. return0;22. 23. 24. sockaddr_inserAddr;25. serAddr.sin_family=AF_INET;26. serAddr.sin_port=htons(8888);27. serAddr.sin_addr.S_un.S_addr=inet_addr(127.0.0.1);28. if(connect(sclient,(sockaddr*)&serAddr,sizeof(serAddr)=SOCKET_ERROR)29. 30. printf(connecterror!);31. closesocket(sclient);32. return0;33. 34. char*sendData=你好，TCP服务端，我是客户端!n;35. send(sclient,sendData,strlen(sendData),0);36. 37. charrecData255;38. intret=recv(sclient,recData,255,0);39. if(ret0)40. 41. recDataret=0x00;42. printf(recData);43. 44. closesocket(sclient);45. WSACleanup();46. return0;47. 然后是UDPserver端：cppview plaincopy1. #includestdafx.h2. #include3. #include4. 5. #pragmacomment(lib,ws2_32.lib)6. 7. intmain(intargc,char*argv)8. 9. WSADATAwsaData;10. WORDsockVersion=MAKEWORD(2,2);11. if(WSAStartup(sockVersion,&wsaData)!=0)12. 13. return0;14. 15. 16. SOCKETserSocket=socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);17. if(serSocket=INVALID_SOCKET)18. 19. printf(socketerror!);20. return0;21. 22. 23. sockaddr_inserAddr;24. serAddr.sin_family=AF_INET;25. serAddr.sin_port=htons(8888);26. serAddr.sin_addr.S_un.S_addr=INADDR_ANY;27. if(bind(serSocket,(sockaddr*)&serAddr,sizeof(serAddr)=SOCKET_ERROR)28. 29. printf(binderror!);30. closesocket(serSocket);31. return0;32. 33. 34. sockaddr_inremoteAddr;35. intnAddrLen=sizeof(remoteAddr);36. while(true)37. 38. charrecvData255;39. intret=recvfrom(serSocket,recvData,255,0,(sockaddr*)&remoteAddr,&nAddrLen);40. if(ret0)41. 42. recvDataret=0x00;43. printf(接受到一个连接：%srn,inet_ntoa(remoteAddr.sin_addr);44. printf(recvData);45. 46. 47. char*sendData=一个来自服务端的UDP数据包n;48. sendto(serSocket,sendData,strlen(sendData),0,(sockaddr*)&remoteAddr,nAddrLen);49. 50. 51. closesocket(serSocket);52. WSACleanup();53. return0;54. client端：cppview plaincopy1. #includestdafx.h2. #include3. #include4. 5. #pragmacomment(lib,ws2_32.lib)6. 7. intmain(intargc,char*argv)8. 9. WORDsocketVersion=MAKEWORD(2,2);10. WSADATAwsaData;11. if(WSAStartup(socketVersion,&wsaData)!=0)12. 13. return0;14. 15. SOCKETsclient=socket(AF_INET,SOCK_DGRAM,IPPROTO_UDP);16. 17. sockaddr_insin;18. sin.sin_family=AF_INET;19. sin.sin_port=htons(8888);20. sin.sin_addr.S_un.S_addr=inet_addr(127.0.0.1);21. intlen=sizeof(sin);22. 23. char*sendData=来自客户端的数据包.n;24. sendto(sclient,sendData,strlen(sendData),0,(sockaddr*)&sin,len