一个网络服务程序报errno 22的情况

最新推荐文章于 2025-04-11 15:54:03 发布

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最新推荐文章于 2025-04-11 15:54:03 发布 · 3.5k 阅读

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最近在学习写socket程序，然后就写了一个模拟web服务器的应答程序，下面我上源码。

#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <assert.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>

#define BUFFER_SIZE 1024
static const char *status_line[2] = {"200 OK", "500 Internal server error"};

int main(int argc, char *argv[]){
        if(argc <= 3){
                printf("usage: %s ip_address port_number filename\n", basename(argv[0]));
                        return 1;
        }

        const char* ip = argv[1];
        int port = atoi(argv[2]);
        const char *file_name = argv[3];

        struct sockaddr_in address;
        bzero(&address, sizeof(address));
        address.sin_family = AF_INET;
        inet_pton(AF_INET, ip, &address.sin_addr);
        address.sin_port = htons(port);

        int sock = socket(PF_INET, SOCK_STREAM, 0);
        assert(sock >= 0);

        int ret = bind(sock, (struct sockaddr*)&address, sizeof(address));
        assert(ret != -1);

        struct sockaddr_in client;
        socklen_t client_addrlength = sizeof(client);
        int connfd = accept(sock, (struct sockaddr*)&client, &client_addrlength);
        if(connfd < 0){
                printf("errno is : %d\n", errno);
        }else{
                char header_buf[BUFFER_SIZE];
                memset(header_buf, '\0', BUFFER_SIZE);
                char *file_buf;
                struct stat file_stat;
                bool valid = true;
                int len = 0;
                if(stat(file_name,