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<h1>Hello!</h1>

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#include <stdio.h>

#include <stdlib.h>

#include <sys/types.h>

#include <sys/socket.h>

#include <netinet/in.h>

#include <arpa/inet.h>

#include <unistd.h>

#include <string.h>

#define PORT 8888

#define BUFFER_SIZE 4096

#define RESPONSE_HEADER "HTTP/1.1 200 OK\r\nConnection: close\r\nAccept-Ranges: bytes\r\nContent-Type: text/html\r\n\r\n"

#define RESPONSE_BODY "<h1>Hello!</h1>"

int handle(int conn){

int len = 0;

char buffer[BUFFER_SIZE];

char *pos = buffer;

bzero(buffer, BUFFER_SIZE);

len = recv(conn, buffer, BUFFER_SIZE, 0);

if (len <= 0 ) {

printf ("recv error");

return -1;

} else {

printf("Debug request:\n--------------\n%s\n\n",buffer);

}

send(conn, RESPONSE_HEADER RESPONSE_BODY, sizeof(RESPONSE_HEADER RESPONSE_BODY), 0);

close(conn);//关闭连接

}

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

int port = PORT;

struct sockaddr_in client_sockaddr;

struct sockaddr_in server_sockaddr;

int listenfd = socket(AF_INET,SOCK_STREAM,0);

int opt = 1;

int conn;

socklen_t length = sizeof(struct sockaddr_in);

setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(int));

server_sockaddr.sin_family = AF_INET;

server_sockaddr.sin_port = htons(port);

server_sockaddr.sin_addr.s_addr = htonl(INADDR_ANY);

if(bind(listenfd,(struct sockaddr *)&server_sockaddr,sizeof(server_sockaddr))==-1){

printf("bind error!\n");

return -1;

}

if(listen(listenfd, 10) < 0) {

printf("listen failed!\n");

return -1;

}

while(1){

conn = accept(listenfd, (struct sockaddr*)&client_sockaddr, &length);

if(conn < 0){

printf("connect error!\n");

continue;

}

if (handle(conn) < 0) {

printf("connect error!\n");

close(conn);

continue;

}

}

return 0;

}