簡單的C++ Web服務器發送錯誤頭

我有很簡單的web服務器：簡單的C++ Web服務器發送錯誤頭

#include <stdio.h> 
#include <stdlib.h> 
#include <unistd.h> 
#include <sys/types.h> 
#include <sys/socket.h> 
#include <netinet/in.h> 
#include <netdb.h> 
#include <arpa/inet.h> 
#include <err.h> 

char response[] = "HTTP/1.1 200 OK\r\n" 
"Content-Type: text/html; charset=UTF-8\r\n" 
"Connection: Keep-Alive\r\n" 
"Server: michal\r\n" 
"Vary: Accept-Encoding\r\n" 
"Keep-Alive: timeout=5, max=100\r\n\r\n" 
"<html><body><h1>It works!</h1>" 
"<p>This is the default web page for this server.</p>" 
"<p>The web server software is running but no content has been added, yet.</p>" 
"</body></html>\r\n"; 

int main() 
{ 
    int one = 1, client_fd; 
    struct sockaddr_in svr_addr, cli_addr; 
    socklen_t sin_len = sizeof(cli_addr); 

    int sock = socket(AF_INET, SOCK_STREAM, 0); 
    if (sock < 0) 
    err(1, "can't open socket"); 

    setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(int)); 

    int port = 8080; 
    svr_addr.sin_family = AF_INET; 
    svr_addr.sin_addr.s_addr = INADDR_ANY; 
    svr_addr.sin_port = htons(port); 

    if (bind(sock, (struct sockaddr *) &svr_addr, sizeof(svr_addr)) == -1) { 
    close(sock); 
    err(1, "Can't bind"); 
    } 

    listen(sock, 5); 
    while (1) { 
    client_fd = accept(sock, (struct sockaddr *) &cli_addr, &sin_len); 
    printf("got connection\n"); 

    if (client_fd == -1) { 
     perror("Can't accept"); 
     continue; 
    } 

    write(client_fd, response, sizeof(response) - 1); /*-1:'\0'*/ 
    close(client_fd); 
    } 
}

這個工程在瀏覽器，頁面被正確渲染，但是當我做AB測試我有錯誤：

Benchmarking localhost (be patient)...apr_poll: The timeout specified has expired (70007) 
Total of 2 requests completed

AB正常工作，當我標杆本地主機（阿帕奇）

當我試圖用PHP的file_get_contents下載頁面我有以下錯誤：

PHP Notice: file_get_contents(): send of 2 bytes failed with errno=32 Broken pipe in /home/mitch/Dokumenty/projects/cpp/webserver/webserver/bench.php on line 7

有什麼不對？

來源

2014-02-17 mitch

我的猜測是在客戶端有機會發送它想要的所有請求頭之前，您正在終止連接。

因此，在close之前添加延遲，或者在收到空行之前實際讀取數據會有所幫助。

來源

2014-02-17 15:31:32

當我加入睡眠（1）的頁面被顯示在瀏覽器1秒和我有一個錯誤，連接（在瀏覽器） – mitch

@米喬克拒絕。嘗試發送'Connection：close'而不是'Connection：Keep-Alive' –

仍然不起作用 – mitch

這裏有類似的問題，解釋說：https://stackoverflow.com/a/6269273/250944（第2頁）

頭是好的，但你應該先讀客戶端的東西，然後才寫響應，在這裏爲DIFF爲您的代碼段與閱讀添加的代碼數據：

@@ -8,6 +8,8 @@ 
#include <arpa/inet.h> 
#include <err.h> 

+#define MAXMSG 16384 
+ 
char response[] = "HTTP/1.1 200 OK\r\n" 
"Content-Type: text/html; charset=UTF-8\r\n" 
"Connection: Keep-Alive\r\n" 
@@ -24,6 +26,8 @@ int main() 
    int one = 1, client_fd; 
    struct sockaddr_in svr_addr, cli_addr; 
    socklen_t sin_len = sizeof(cli_addr); 
+ char read_buffer[MAXMSG]; 
+ int nbytes; 

    int sock = socket(AF_INET, SOCK_STREAM, 0); 
    if (sock < 0) 
@@ -50,6 +54,13 @@ int main() 
     perror("Can't accept"); 
     continue; 
    } 
+ nbytes = read (client_fd, read_buffer, MAXMSG); 
+ 
+ if (nbytes < 0) { 
+  perror("Can't read"); 
+  close(client_fd); 
+  continue; 
+ } 

    write(client_fd, response, sizeof(response) - 1); /*-1:'\0'*/ 
    close(client_fd);

來源

2014-11-27 20:00:42 Dfr

簡單的C++ Web服務器發送錯誤頭

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