Question

我正试图想出最佳办法,把录像文件发送到TCP的袖珍片上。我已经做了一个标准袖珍方案,但在<条码>上之后。我的指挥并不确定我如何能够拯救它。

守则样本

//bind server socketfd
if (bind(sfdServer, (struct sockaddr*)&adrServer, ServerAddrLen) < 0)
    error("ERROR binding");
listen(sfdServer, 5);
while(1){
    printf("Waiting for connections...
");
    sfdClient = accept(sfdServer, (struct sockaddr*)&adrClient, &ClientAddrLen);
    if(sfdClient < 0)
        error("ERROR accepting");

    printf("Connection Established.
");
    //set buffer to zero        
    bzero(buff, 2048);
    printf("Reading from client.
");
    numChar = read(sfdClient, buff, 2048);

    //What should go here?

    close(sfdClient);
    close(sfdServer);

}

Would I just save the buffer as a file movie.mp4 or something like that? I realize I may need to change my buffer size or possibly send it in chunks. But I can t find any good info on the best way to do this. Any help or a point in the right direction would be appreciated!

Answer 1

页: 1

第一,开放一份书面产出文件:

   #include <sys/types.h>
   #include <sys/stat.h>
   #include <fcntl.h>


   int outfd;
   outfd = open("movie.mp4", O_WRONLY|);

接着,在<代码>read()之后,用字母书写:

   numWrite = write(outfd, buff, numChar);

请注意,你需要处理一些king/bu死案件,例如:

Either the read() or the write() returning zero or -1 (error)
Reading until no more bytes are available. Right now, your code only reads 2048 bytes and then closes the socket.
The write() writing fewer bytes than requested (this can happen on network filesystems)

Answer 2

首先,请您考虑使用sendfile(, 或相当于你的系统。也就是说,不要把档案中一个小块放在你的记忆中,只是为了在某个地方重新书写,你应当记住——给你的档案描述员,并寄出一切。

至于king,结核病防治中心负责将溪流分解成包装。理想的情况是,边远的点子应当确切知道有多少东西可以预期会发生对抗,以便它能够处理终止婚前问题(为什么吉大港山区长老会的头盔包含一段内容)。

因此,在发送数据之前使用某种手法。然后,投稿人应当只打上“sendfile()”的空档,同时注意发送的数据数量和退回的<代码>offet。接收人应当使用“recv(),以确保所有到达者(没有标准“recvfile()。

友情链接