问题描述
- 套接字程序，可以和本机的服务器互联，不能连接别的服务器，error10057,求大神帮忙！
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下面是代码：/* TCPClient.cpp -- 用于传递struct */ #include <stdlib.h> #include <stdio.h> #include <winsock2.h> #include <string.h> #include <time.h> #include <windows.h> #include <process.h> #include <math.h> #define BUFLEN 2000 // 缓冲区大小 #define WSVERS MAKEWORD(2, 0) // 指明版本2.0 #pragma comment(lib,"ws2_32.lib") // 指明winsock 2.0 Llibrary /*------------------------------------------------------------------------ * main - TCP client for DAYTIME service *------------------------------------------------------------------------*/ SOCKET sock, sockets[100] = { NULL }; /* socket descriptor */ // int cc; /* recv character count */ char *packet = NULL; /* buffer for one line of text */ char *pts, *input; HANDLE hThread; unsigned threadID; unsigned int __stdcall Chat(PVOID PM) { time_t now; (void)time(&now); pts = ctime(&now); char buf[2000]; while (1) { int cc = recv(sock, buf, BUFLEN, 0); //cc为接收的字符数 if (cc == SOCKET_ERROR || cc == 0) { printf("Error: %d ", GetLastError()); printf("与服务器断开连接！n"); (void)closesocket(sock); break; } else if (cc > 0) { buf[cc] = ''; printf("%sn", buf); } } return 0; } int main(int argc, char *argv[]) { time_t now; (void)time(&now); pts = ctime(&now); //char *host = "192.168.220.1"; /* server IP to connect */ //char *host = "192.168.220.1"; char *host = "202.116.76.22"; char *service = "5050"; /* server port to connect */ struct sockaddr_in sin; /* an Internet endpoint address */ WSADATA wsadata; WSAStartup(WSVERS, &wsadata); /* 启动某版本Socket的DLL */ memset(&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_port = htons((u_short)atoi(service)); //atoi：把ascii转化为int. htons：主机序(host)转化为网络序(network), s--short sin.sin_addr.s_addr = inet_addr(host); //如果host为域名，需要先用函数gethostbyname把域名转化为IP地址 sock = socket(PF_INET, SOCK_STREAM, 0); hThread = (HANDLE)_beginthreadex(NULL, 0, Chat, NULL, 0, &threadID); printf(" LET'S CHAT(CLIENT)n"); connect(sock, (struct sockaddr *)&sin, sizeof(sin)); while (1) { printf("请输入您要发送的信息:n"); char buf1[2000]; gets_s(buf1); if (!strcmp(buf1, "exit")) goto end; (void)send(sock, buf1, sizeof(buf1), 0); (void)time(&now); pts = ctime(&now); printf("发送成功！n当前时间:%sn", pts); } end: CloseHandle(hThread); closesocket(sock); WSACleanup(); /* 卸载某版本的DLL */ printf("按回车键继续..."); getchar(); return 0; /* exit */ }下面是服务器代码：
/* TCPServer.cpp - main */ #include <stdlib.h> #include <stdio.h> #include <winsock2.h> #include <time.h> #include "conio.h" #include<windows.h> #include<process.h> #include<math.h> #define QLEN 5 #define WSVERS MAKEWORD(2, 0) #define BUFLEN 2000 #pragma comment(lib,"ws2_32.lib") //使用winsock 2.2 library /*------------------------------------------------------------------------ * main - Iterative TCP server for TIME service *------------------------------------------------------------------------ */ SOCKET msock, ssock; SOCKET sockets[100] = { NULL }; int cc; char *pts; time_t now; char buf[2000]; //buffer char *input; HANDLE hThread1, hThread[100] = { NULL }; unsigned int threadID, ThreadID[100], number; struct sockaddr_in fsin; struct sockaddr_in Sin; unsigned int __stdcall Chat(PVOID PM) { char buf1[2000] = { NULL }; char buf2[2000] = { NULL }; char buf3[2000] = { NULL }; char buf4[2000] = { NULL }; /*char buf1[2000]; char buf2[2000]; char buf3[2000]; char buf4[2000]; */ (void)time(&now); pts = ctime(&now); sockets[number] = ssock; SOCKET sock = ssock; ThreadID[number] = threadID; unsigned int threadid = threadID; sprintf(buf1, "线程号:[%d] 当前时间:%s", threadid, pts); (void)send(sock, buf1, sizeof(buf1), 0); sprintf(buf2, "线程号:[%d] 客户IP:[%d] 端口:[%d] enter!n", threadid, inet_ntoa(Sin.sin_addr), fsin.sin_port); printf("%s", buf2); printf("数据已传送到所有用户！n"); for (int i = 0; i <= number; i++) { if (sockets[i] != NULL&& sockets[i] != sock) { (void)send(sockets[i], buf2, sizeof(buf2), 0); printf("发送至线程号[%d]成功！ n", ThreadID[i]); } } printf("n"); flag1: cc = recv(sock, buf3, BUFLEN, 0); if (cc == SOCKET_ERROR || cc == 0) { (void)time(&now); pts = ctime(&now); sprintf(buf3, "线程号:[%d] 客户IP:[%d] 端口:[%d] leave !n当前时间:%s", threadid, inet_ntoa(Sin.sin_addr), fsin.sin_port, pts); sock = NULL; sockets[number] = NULL; printf("%s", buf3); printf("数据已传送到所有用户！n"); for (int i = 0; i <= number; i++) { if (sockets[i] != NULL && sockets[i] != sock) { (void)send(sockets[i], buf3, sizeof(buf3), 0); printf("发送至线程号[%d]成功 ！n", ThreadID[i]); } } printf("n"); } else if (cc > 0) { (void)time(&now); pts = ctime(&now); sprintf(buf4, "线程号:[%d] IP:[%d] 端口:[%d] n消息内容:%s;n当前时间:%s", threadid, inet_ntoa(Sin.sin_addr), fsin.sin_port, buf3, pts); printf("%s", buf4); printf("数据已传送到所有用户！n"); for (int i = 0; i <= number; i++) { if (sockets[i] != NULL&&sockets[i] != sock) { (void)send(sockets[i], buf4, sizeof(buf4), 0); printf("发送至线程号[%d]成功！n", ThreadID[i]); } } printf("n"); goto flag1; } (void)closesocket(sock); return 0; } void main(int argc, char *argv[]) { int alen; /* from-address length*/ WSADATA wsadata; char *service = "5050"; WSAStartup(WSVERS, &wsadata); //加载 winsock 2.2 library msock = socket(PF_INET, SOCK_STREAM, 0); //生成套接字。TCP协议号=6， UDP协议号=17 memset(&Sin, 0, sizeof(Sin)); Sin.sin_family = AF_INET; Sin.sin_addr.s_addr = INADDR_ANY; //指定绑定接口的IP地址。INADDR_ANY表示绑定(监听)所有的接口。 Sin.sin_port = htons((u_short)atoi(service)); //atoi--把ascii转化为int，htons - 主机序(host)转化为网络序(network), s(short) bind(msock, (struct sockaddr *)&Sin, sizeof(Sin)); // 绑定端口号（和IP地址) listen(msock, 5); //队列长度为5 printf(" LET'S CHAT (SERVER) n"); (void)time(&now); pts = ctime(&now); printf("当前时间:%s", pts); number = -1; while (1) { //检测是否有按键 alen = sizeof(struct sockaddr); ssock = accept(msock, (struct sockaddr *)&fsin, &alen); number++; hThread[number] = (HANDLE)_beginthreadex(NULL, 0, Chat, NULL, 0, &threadID); } (void)closesocket(msock); WSACleanup(); //卸载载 winsock 2.2 library }
解决方案
先ping一下主机，看能不能ping通咯
解决方案二：
解决方案三：
本机能连接，说明套拼字正确。
问题出在网络连接上：
（1）取消服务器防火墙；
（2）建议服务器使用静态IP地址
（3）服务器端相关网络的参数设置有问题。
时间： 2024-09-22 14:55:17