linux socketプログラミング(マルチスレッド)

1、クライアント

#include 
#include 
#include 
#include 
#include 

#include 
#include 
#include 
#include 
#include 

/*
   ：          ，               （   ）      ，                   
         ，           ，           。
 */

typedef struct _recvmodel
{
    int st;
    struct sockaddr_in * addr;
} RecvModel;

//send message
void * send_thread(void *arg)
{
    if (arg == NULL)
    {
        printf("param is not allow NULL!
");
        return NULL;
    }
    int st = *(int *) arg;
    char buf[1024] = { 0 };
    while (1)
    {
        read(STDIN_FILENO, buf, sizeof(buf));
        if (send(st, buf, strlen(buf), 0) == -1)
        {
            printf("send failed ! error message %s
", strerror(errno));
            return NULL;
        }
        memset(buf, 0, sizeof(buf));
    }
    return NULL;
}

//recv message
void * recv_thread(void * arg)
{
    if (arg == NULL)
    {
        printf("param is not allow NULL!
");
        return NULL;
    }
    RecvModel * model = (RecvModel *) arg;
    int flag = 0;
    char buf[1024] = { 0 };
    while (1)
    {
        flag = recv(model->st, buf, sizeof(buf), 0);
        if (flag == 0)
        {
            printf("        ！
");
            return NULL;
        } else if (flag == -1)
        {
            printf("recv failed ! error message : %s
", strerror(errno));
            return NULL;
        }
        printf("from %s:%s", inet_ntoa(model->addr->sin_addr), buf);
        memset(buf, 0, sizeof(buf));
    }
    return NULL;
}

int main(int arg, char *args[])
{
    //  socket
    int st = socket(AF_INET, SOCK_STREAM, 0);
    if (st == -1)
    {
        printf("open socket failed! error message:%s
", strerror(errno));
        return -1;
    }
    //  IP    
    struct sockaddr_in addr;
    memset(&addr, 0, sizeof(addr));
    //  TCP/IP  
    addr.sin_family=AF_INET;
    //     
    addr.sin_port = htons(8080);
    //        
    addr.sin_addr.s_addr = inet_addr("192.168.1.102");
    //connect server
    int numx = connect(st, (struct sockaddr *) &addr, sizeof(addr));
    if (numx == -1)
    {
        printf("connect server failed ! error message :%s
", strerror(errno));
        goto END;
    }

    RecvModel model;
    model.st = st;
    model.addr = &addr;
    //     --  1    ，  2    
    pthread_t thr1, thr2;
    if (pthread_create(&thr1, NULL, send_thread, &st) != 0)
    {
        printf("create thread failed ! 
");
        goto END;
    }
    if (pthread_create(&thr2, NULL, recv_thread, &model) != 0)
    {
        printf("create thread failed ! 
");
        goto END;
    }
    pthread_join(thr1, NULL);
    pthread_join(thr2, NULL);
    END: close(st);
    return 0;
}

2,サーバ側

//    --   
#include 
#include 
#include 
#include 
#include 

#include 
#include 
#include 
#include 
#include 

typedef struct _recvmodel
{
    int st;
    struct sockaddr_in * addr;
} RecvModel;

//send message
void * send_thread(void *arg)
{
    if (arg == NULL)
    {
        printf("param is not allow NULL!
");
        return NULL;
    }
    int st = *(int *) arg;
    char buf[1024] = { 0 };
    while (1)
    {
        read(STDIN_FILENO, buf, sizeof(buf));
        if (send(st, buf, strlen(buf), 0) == -1)
        {
            printf("send failed ! error message %s
", strerror(errno));
            return NULL;
        }
        memset(buf, 0, sizeof(buf));
    }
    return NULL;
}

//recv message
void * recv_thread(void * arg)
{
    if (arg == NULL)
    {
        printf("param is not allow NULL!
");
        return NULL;
    }
    RecvModel * model = (RecvModel *) arg;
    int flag = 0;
    char buf[1024] = { 0 };
    while (1)
    {
        flag = recv(model->st, buf, sizeof(buf), 0);
        if (flag == 0)
        {
            printf("        ！
");
            return NULL;
        } else if (flag == -1)
        {
            printf("recv failed ! error message : %s
", strerror(errno));
            return NULL;
        }
        printf("from %s:%s", inet_ntoa(model->addr->sin_addr), buf);
        memset(buf, 0, sizeof(buf));
    }
    return NULL;
}

int main(int arg, char *args[])
{

    //short port = atoi(args[1]);
    //  socket
    int st = socket(AF_INET, SOCK_STREAM, 0);
    if (st == -1)
    {
        printf("open socket failed! error message:%s
", strerror(errno));
        return -1;
    }
    //         
    int on = 1;
    if (setsockopt(st, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)) == -1)
    {
        printf("setsockpot failed ! error message %s
", strerror(errno));
        goto END;
    }
    //  IP    
    struct sockaddr_in addr;
    memset(&addr, 0, sizeof(addr));
    //  TCP/IP  
    addr.sin_family = AF_INET;
    //     
    addr.sin_port = htons(8080);
    //        
    addr.sin_addr.s_addr = htonl(INADDR_ANY);
    //bind ip
    if (bind(st, (struct sockaddr *) &addr, sizeof(addr)) == -1)
    {
        printf("bind ip failed ! error message :%s
", strerror(errno));
        goto END;
    }
    //    
    if (listen(st, 20) == -1)
    {
        printf("listen failed ! error message :%s
", strerror(errno));
        goto END;
    }
    //       （  ）
    struct sockaddr_in client_addr;
    memset(&client_addr, 0, sizeof(client_addr));
    socklen_t client_addrlen = sizeof(client_addr);
    //  ：   client_addrlen           client_addrlen  ，    client_addrlen     client_addr          ，
    //    client_addrlen   0    ，   struct sockaddr_in       ，        
    int client_st = accept(st, (struct sockaddr *) &client_addr,
            &client_addrlen);
    if (client_st == -1)
    {
        printf("accept failed ! error message :%s
", strerror(errno));
        goto END;
    }
    RecvModel model;
    model.st = client_st;
    model.addr = &client_addr;
    printf("accept by=%s
",inet_ntoa(client_addr.sin_addr));
    //     --  1    ，  2    
    pthread_t thr1, thr2;
    if (pthread_create(&thr1, NULL, send_thread, &client_st) != 0)
    {
        printf("create thread failed ! 
");
        goto END;
    }
    if (pthread_create(&thr2, NULL, recv_thread, &model) != 0)
    {
        printf("create thread failed ! 
");
        goto END;
    }
    pthread_join(thr1, NULL);
    pthread_join(thr2, NULL);
    //       
    close(client_st);
    END: close(st);
    return 0;
}