[英]Socket in c TCP how do i test connection?
For a school project I have to use sockets to create a server, I think I managed to do it but I am supposed to use Telnet to test it, and whenever I try I get对于一个学校项目,我必须使用 sockets 来创建服务器,我想我设法做到了,但我应该使用 Telnet 来测试它,每当我尝试时,我都会得到
telnet: connect to address 0.0.0.0: Connection refused telnet:连接到地址 0.0.0.0:连接被拒绝
So i guess it is with the IP that I'm wrong.所以我想我错了 IP 。
The simplified version of my code that should still work for one connection is我的代码的简化版本仍然适用于一个连接是
int main(int argc , char *argv[])
{
int sock;
int fd = 0;
int err = 0;
struct sockaddr_in sock_data;
socklen_t addr_size;
char *path;
path = get_current_dir_name();
if (argc == 2)
printf("%s", Usage);
sock = socket(AF_INET , SOCK_STREAM , 0);
if (sock == -1) {
printf("Could not create socket");
return (84);
}
memset(&sock_data, 0, sizeof(struct sockaddr_in));
sock_data.sin_family = AF_INET;
sock_data.sin_port = htons(5133);
sock_data.sin_addr.s_addr = htonl(INADDR_ANY);
printf("%s, %s, %s\n", path, sock_data.sin_addr, inet_ntoa(sock_data.sin_addr));
if (bind(sock, (const struct sockaddr *) &sock_data, sizeof(sock_data)) == -1)
printf("Error with binding\n");
if (listen(sock, LISTEN_BACKLOG) == -1)
printf("Error with listen");
addr_size = sizeof(struct sockaddr_in);
err = accept(sock, (struct sockaddr *) &sock_data, &addr_size);
while ((sock = accept(sock, NULL, NULL)) < 0)
err = 0;
return 84;
}
I saw this link: TCP sockets in c that was quite clear but I still don't get how I am supposed to test my program我看到了这个链接: c 中的 TCP sockets这很清楚,但我仍然不明白我应该如何测试我的程序
And the more I work on it the more I am convinced that I must have made a stupid mistake.我越是努力,我就越相信我一定犯了一个愚蠢的错误。
So do you know where I went wrong?那你知道我哪里错了吗?
In your Telnet command you missed a port.在您的 Telnet 命令中,您错过了一个端口。 The commamd should be like a commamd 应该像一个
telnet system_ip port
For example例如
telnet 192.168.1.1 5631
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