tcp - F-stack Client 未连接到 F-stack Server

问题描述

我正在尝试通过 dpdk(19.08) 上的 F 堆栈建立 tcp 连接。F-stack 包中给出的示例创建了服务器，但是当我尝试从同一台或另一台 pc 连接该端口时，它没有响应任何内容。仍然在 netstat 中显示服务器正在侦听，但我无法从我的客户端连接应用。我尝试了 n 没有 F 堆栈的客户端应用程序（例如 Winshock 客户端应用程序），但没有什么好处。这是我的 F-stack 客户端代码。

#include <stdio.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <strings.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <errno.h>
#include <assert.h>

#include "ff_config.h"
#include "ff_api.h"
#include "ff_epoll.h"


#define MAX_EVENTS 512

struct epoll_event ev;
struct epoll_event events[MAX_EVENTS];

int epfd;
int sockfd;

char html[] = 
"HTTP/1.1 200 OK\r\n"
"Server: F-Stack\r\n"
"Date: Sat, 25 Feb 2017 09:26:33 GMT\r\n"
"Content-Type: text/html\r\n"
"Content-Length: 438\r\n"
"Last-Modified: Tue, 21 Feb 2017 09:44:03 GMT\r\n"
"Connection: keep-alive\r\n"
"Accept-Ranges: bytes\r\n"
"\r\n"
"<!DOCTYPE html>\r\n"
"<html>\r\n"
"<head>\r\n"
"<title>Welcome to F-Stack!</title>\r\n"
"<style>\r\n"
"    body {  \r\n"
"        width: 35em;\r\n"
"        margin: 0 auto; \r\n"
"        font-family: Tahoma, Verdana, Arial, sans-serif;\r\n"
"    }\r\n"
"</style>\r\n"
"</head>\r\n"
"<body>\r\n"
"<h1>Welcome to F-Stack!</h1>\r\n"
"\r\n"
"<p>For online documentation and support please refer to\r\n"
"<a href=\"http://F-Stack.org/\">F-Stack.org</a>.<br/>\r\n"
"\r\n"
"<p><em>Thank you for using F-Stack.</em></p>\r\n"
"</body>\r\n"
"</html>";
struct sockaddr_in my_addr;
int loop(void *arg)
{
    /* Wait for events to happen */

    int nevents = ff_epoll_wait(epfd,  events, MAX_EVENTS, 0);
    int i;

    for (i = 0; i < nevents; ++i) {
        /* Handle new connect */
        if (events[i].data.fd == sockfd) {
            while (1) {
                int nclientfd = ff_accept(sockfd, (struct linux_sockaddr *)&my_addr, sizeof(my_addr));
                if (nclientfd < 0) {
                    break;
                }

                /* Add to event list */
                ev.data.fd = nclientfd;
                ev.events  = EPOLLIN;
                if (ff_epoll_ctl(epfd, EPOLL_CTL_ADD, nclientfd, &ev) != 0) {
                    printf("ff_epoll_ctl failed:%d, %s\n", errno,
                        strerror(errno));
                    break;
                }
            }
        } else { 
            if (events[i].events & EPOLLERR ) {
                /* Simply close socket */
                ff_epoll_ctl(epfd, EPOLL_CTL_DEL,  events[i].data.fd, NULL);
                ff_close(events[i].data.fd);
            } else if (events[i].events & EPOLLIN) {
                char buf[256];
                size_t readlen = ff_read( events[i].data.fd, buf, sizeof(buf));
                if(readlen > 0) {
                    ff_write( events[i].data.fd, html, sizeof(html) - 1);
                } else {
                    ff_epoll_ctl(epfd, EPOLL_CTL_DEL,  events[i].data.fd, NULL);
                    ff_close( events[i].data.fd);
                }
            } else {
                printf("unknown event: %8.8X\n", events[i].events);
            }
        }
    }
}

int main(int argc, char * argv[])
{
    ff_init(argc, argv);

    sockfd = ff_socket(AF_INET, SOCK_STREAM, 0);
    printf("sockfd:%d\n", sockfd);
    if (sockfd < 0) {
        printf("ff_socket failed\n");
        exit(1);
    }

    int on = 1;
    ff_ioctl(sockfd, FIONBIO, &on);

    
    bzero(&my_addr, sizeof(my_addr));
    my_addr.sin_family = AF_INET;
    my_addr.sin_port = htons(15231);
    my_addr.sin_addr.s_addr = inet_addr("127.0.0.1");

    int ret = ff_bind(sockfd, (struct linux_sockaddr *)&my_addr, sizeof(my_addr));
    if (ret < 0) {
        printf("ff_bind failed\n");
        exit(1);
    }

    ret = (ff_connect(sockfd, (struct linux_sockaddr *)&my_addr, sizeof(my_addr)) == -1);  //ff_connect
    if (ret < 0) {
        printf("ff_listen failed\n");
        exit(1);
    }

    assert((epfd = ff_epoll_create(0)) > 0);
    ev.data.fd = sockfd;
    ev.events = EPOLLIN;
    ff_epoll_ctl(epfd, EPOLL_CTL_ADD, sockfd, &ev);
    ff_run(loop, NULL);
    return 0;
}

标签： tcpserverclient

tcp - F-stack Client 未连接到 F-stack Server

问题描述

解决方案

推荐阅读