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

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

int main(int argc, char **argv) 
{
    int listenfd, *connfdp;
    socklen_t clientlen;
    struct sockaddr_storage clientaddr;
    pthread_t tid; 
    char client_hostname[MAXLINE], client_port[MAXLINE];

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

    while (1) {
        clientlen=sizeof(struct sockaddr_storage);
	connfdp = Malloc(sizeof(int)); //line:conc:echoservert:beginmalloc
	*connfdp = Accept(listenfd, (SA *) &clientaddr, &clientlen); //line:conc:echoservert:endmalloc
	Pthread_create(&tid, NULL, thread, connfdp);
        Getnameinfo((SA *) &clientaddr, clientlen, client_hostname, MAXLINE, 
                    client_port, MAXLINE, 0);
        printf("Connected to (%s, %s) via thread %d\n",
	       client_hostname, client_port, (int) tid);
    }
}

/* 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 */