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,