php - 瀏覽器作為客戶端存取 socket伺服器程式失敗 ?

Question

寫一個socket客戶端程式存取正常. 用telent存取也正常, 但是瀏覽器作為客戶端訪問直接報錯, 壓根不會進入while循環中, 這是為啥 ?

瀏覽器存取 127.0.0.1:8899
服務端程式直接退出, 報了一行錯誤 : Segmentation fault (核心已轉儲)

服務端程式碼大概長下面這樣

int main(int argc, char *argv[]){
    
    if(argc != 2){
        err_msg("Usage: ./studyHttpd <ip address>\n");
    }

    struct sockaddr_in server_sock, client_sock;
    int sockfd, client_fd;
    int sin_size;
    pthread_t ntid;
    
    if(-1 == (sockfd = socket(AF_INET, SOCK_STREAM, 0))) err_exit("socket");
    printf("Socket id = %d\n", sockfd);

    server_sock.sin_family = AF_INET;
    server_sock.sin_port = htons(PORT);
    server_sock.sin_addr.s_addr = INADDR_ANY;
    bzero(&(server_sock.sin_zero), 8);

    int i = 1;
    setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &i, sizeof(i));
    
    if(-1 == bind(sockfd, (struct sockaddr *)&server_sock, sizeof(struct sockaddr))) err_exit("bind");
    printf("Bind success\n");

    if(-1 == listen(sockfd, MAX_QUE_CONN_NM)) err_exit("listen");
    printf("Listening port = %d\n", PORT);

    sin_size = sizeof(client_sock);

    /*在浏览器根本不会执行到这一步, 其他做客户端正常*/

    while(1){
        if(-1 == (client_fd = accept(sockfd, (struct sockaddr *) &client_sock, &sin_size))) err_exit("accept");

        if(pthread_create(&ntid, NULL, (void *)handle, &client_fd) != 0) err_exit("pthread_create");
    }
    close(sockfd);
    return 0;
}

Answer 1

瀏覽器走的是http協定 socket一般走的是tcp/ip協定

http協定有特殊的報文頭,沒有的話當然訪問不了