我是 Docker 的新手。 我编写了一个服务器/客户端(非常简单)应用程序,它们都在同一个容器中运行。
我在 OSX 上工作,当我将客户端连接到服务器时,它工作得很好。
但是,我无法将我的客户端连接到我的服务器。这是我的代码:
客户端.c:
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <arpa/inet.h>
int main(int argc, char *argv[])
{
int sockfd = 0, n = 0;
char recvBuff[1024];
struct sockaddr_in serv_addr;
if(argc != 2) {
printf("\n Usage: %s <ip of server> \n",argv[0]);
return 1;
}
memset(recvBuff, '0',sizeof(recvBuff));
if((sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
printf("\n Error : Could not create socket \n");
return 1;
}
memset(&serv_addr, '0', sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(5000);
if(inet_pton(AF_INET, argv[1], &serv_addr.sin_addr)<=0) {
printf("\n inet_pton error occured\n");
return 1;
}
int connect_value = connect(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr));
if (connect_value < 0) {
printf("Value of connect_value %d\n", connect_value);
fprintf(stderr, "Value of errno: %d\n", errno);
return (1);
}
while ( (n = read(sockfd, recvBuff, sizeof(recvBuff)-1)) > 0){
recvBuff[n] = 0;
if(fputs(recvBuff, stdout) == EOF)
printf("\n Error : Fputs error\n");
}
if(n < 0)
printf("\n Read error \n");
return 0;
}
服务器.c
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <time.h>
int main(int argc, char *argv[])
{
int listenfd = 0, connfd = 0;
struct sockaddr_in serv_addr;
char sendBuff[1025];
time_t ticks;
listenfd = socket(AF_INET, SOCK_STREAM, 0);
memset(&serv_addr, '0', sizeof(serv_addr));
memset(sendBuff, '0', sizeof(sendBuff));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
serv_addr.sin_port = htons(5000);
bind(listenfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
listen(listenfd, 10);
while(1)
{
connfd = accept(listenfd, (struct sockaddr*)NULL, NULL);
ticks = time(NULL);
snprintf(sendBuff, sizeof(sendBuff), "%.24s\r\n", ctime(&ticks));
write(connfd, sendBuff, strlen(sendBuff));
close(connfd);
sleep(1);
}
}
我用来启动容器的命令行:
docker run -it --security-opt seccomp=unconfined --mount type=bind,src=/Users/steven/Documents/eip/firmware_coit,dst=/bidon 987steven/eip_linux bash
我编译运行的方式如下:
gcc server.c -o server && ./server
gcc client.c -o client && ./client 127.0.0.1
Error : Connect Failed Value of
connect_value -1
Value of errno: 111
在 SO 上发帖之前,我试图自己弄清楚,但大部分主题和阅读内容是:
- 如何将 unix-socket 连接到 docker-demon
- docker.sock
- docker 容器网络(官方文档)
但没有找到任何可以解决我的问题的东西。
需要说明的是,我对网络的总体了解很少,而且是 docker 的新手。请随时询问您是否收到我的其他信息。谢谢
最佳答案
问题解决!
我曾经使用以下方式启动我的容器:
docker run -it --security-opt seccomp=unconfined --mount type=bind,src=/Users/steven/Documents/eip/firmware_coit,dst=/bidon 987steven/eip_linux bash
但我只需要在命令行中添加:
--net="host"
Alternatively you can run a docker container with network settings set to host. Such a container will share the network stack with the docker host and from the container point of view, localhost (or 127.0.0.1) will refer to the docker host.
来源:From inside of a Docker container, how do I connect to the localhost of the machine?
关于C 应用程序服务器/客户端在 docker 容器中不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/46926582/