HTTP响应连接重置？

Question

I'm writing up a simple web server that implements select components of the http 1.1 protocol and thus far I have a tcp server that serves a static web page to all tcp connections it receives. 我正在编写一个简单的Web服务器来实现http 1.1协议的选择组件，到目前为止，我有一个tcp服务器，它为它接收的所有tcp连接提供静态Web页面。 I feel like there might be a race condition or some other event happening that I'm not aware of. 我觉得可能会出现竞争状况或其他一些我不知道的事件。

Here's the essence of the code in question: 以下是相关代码的本质：

char hello[] =
    "HTTP/1.1 200 OK\r\n"
    // "Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT\r\n"
    // "Content-Length: 131\r\n"
    // "Connection: close\r\n"
    "\r\n"
    "<html>\n"
    "<head>\n"
    "  <title>An Example Page</title>\n"
    "</head>\n"
    "<body>\n"
    "  Hello World, this is a very simple HTML document.\n"
    "</body>\n"
    "</html>\n";

while(true) {
    addrlen = sizeof(peer);
    sockd2 = ::accept(_sockd, (sockaddr*)&peer, &addrlen);
    if (sockd2 == -1) {
        perror("Wrong connection");
        continue;
    }
    write(sockd2, hello, sizeof(hello));
    // close(sockd2);
}

I'm using Google Chrome to connect to localhost:8080 and as is above, the page loads just fine. 我正在使用谷歌浏览器连接到localhost：8080，如上所述，页面加载正常。

If I uncomment the close call and Connection: close line, the page won't load and instead the developer console reads Failed to load resource: net::ERR_CONNECTION_RESET . 如果我取消注释close调用和Connection: close行，则页面将不会加载，而开发人员控制台将显示“ Failed to load resource: net::ERR_CONNECTION_RESET 。

If I do the above but also uncomment one of the other http header lines, it loads. 如果我执行上述操作但也取消注释其他http标题行之一，则会加载。

What's going on? 这是怎么回事？

Answer 1

There is no 'race condition' here. 这里没有“竞争条件”。 This is a network error. 这是一个网络错误。

The problem is that you're not reading the request and not terminating the response correctly. 问题是您没有读取请求而没有正确终止响应。

When the browser writes to a connection that you have already closed, your end issues a TCP RST, which is 'connection reset'. 当浏览器写入您已关闭的连接时，您的结束会发出TCP RST，即“连接重置”。

Read the request. 阅读请求。 And you must either close the socket or send a content-length header. 您必须关闭套接字或发送内容长度标头。

You need to read the HTTP 1.1 RFC. 您需要阅读HTTP 1.1 RFC。 It isn't as trivial as you seem to think. 它并不像你想象的那样微不足道。

HTTP响应连接重置？

问题描述

1 个解决方案

解决方案1
3 已采纳 2014-05-29 02:59:47

HTTP响应连接重置？

问题描述

1 个解决方案

解决方案1 3 已采纳 2014-05-29 02:59:47

解决方案1
3 已采纳 2014-05-29 02:59:47