/* 
 * echoservert.c - A concurrent echo server using threads
 */
/* $begin echoservertmain */
#include "csapp.h"

void echo(int connfd);
void *thread(void *vargp);
char *haddrp;

int main(int argc, char **argv) 
{
    int listenfd, *connfdp, port;
    socklen_t clientlen=sizeof(struct sockaddr_in);
    struct sockaddr_in clientaddr;
    pthread_t tid; 

    if (argc != 2) {
	fprintf(stderr, "usage: %s <port>\n", argv[0]);
	exit(0);
    }
    port = atoi(argv[1]);

    listenfd = Open_listenfd(port);
    while (1) {
	connfdp = Malloc(sizeof(int)); //line:conc:echoservert:beginmalloc
	*connfdp = Accept(listenfd, (SA *) &clientaddr, &clientlen); //line:conc:echoservert:endmalloc
	haddrp = inet_ntoa(clientaddr.sin_addr);
	Pthread_create(&tid, NULL, thread, connfdp);
    }
}

/* thread routine */
void *thread(void *vargp) 
{  
    int connfd = *((int *)vargp);
    Pthread_detach(pthread_self()); //line:conc:echoservert:detach
    Free(vargp);                    //line:conc:echoservert:free
    echo(connfd);
    Close(connfd);
    return NULL;
}
/* $end echoservertmain */
void echo(int connfd) 
{
    static char timestr[40];  
    time_t t;  
    struct tm *nowtime;
    time(&t);  
    nowtime = localtime(&t);  
    strftime(timestr,sizeof(timestr),"%Y-%m-%d %H:%M:%S",nowtime);
    size_t n; 
    char buf[MAXLINE]; 
    rio_t rio;

    Rio_readinitb(&rio, connfd);
    while((n = Rio_readlineb(&rio, buf, MAXLINE)) != 0) { //line:netp:echo:eof
	printf("server received %d bytes\n", (int)n);
	printf("客户端IP:%s\n",haddrp);
	printf("服务器实现者学号:20155339\n");
	printf("当前时间:%s\n",timestr);
	printf("\n");
	Rio_writen(connfd, buf, n);
    }
}