http

Apache HTTPD 正向(forward)和反向(reverse)代理

由 可紊 提交于 2021-02-18 07:35:40
Apache可以被配置为正向(forward)和反向(reverse)代理，下面分别从这两方面重点介绍： 提供CHM版参考手册下载：Apache 2.2 简体中文参考手册.chm（金步国翻译） 示例环境为：windows vista+apache2.2.19，以下配置亲测均通过 一、正向代理forward proxy [1]、概念及用途 正向代理是一个位于客户端和目标原始服务器之间的服务器，为了从原始服务器取得内容，客户端向代理发送一个请求并指定目标原始服务器，然后代理向原始服务器转交请求并将获得的内容返回给客户端。客户端必须要进行一些特别的设置才能使用正向代理，比如我们经常需要在浏览器中设置代理来访问一些网站。 正向代理的典型用途是为在防火墙内的局域网客户端提供访问Internet的途径。正向代理还可以使用缓冲特性(由mod_cache提供)减少网络使用率。 [2]、配置及演示 打开文件conf/httpd.conf，搜索到以下内容，去掉注释加载相应模块（去掉前面的“#”即可） 引用 LoadModule proxy_module modules/mod_proxy.so LoadModule proxy_http_module modules/mod_proxy_http.so 在文件httpd.conf的末尾加上如下内容： 引用 # module proxy config

What happens in HTTP response to a GET request without Content-Length or Transfer-encoding?

由 爷，独闯天下 提交于 2021-02-18 06:42:50
问题 If a response to a GET request doesn't have the Content-Length or Transfer-encoding: chunked field, what happens? How does the client know when the message ends? 回答1: RFC 7230 section 3.3.3 contains a nice checklist of conditions for finding the message body size. Essentially it says the answer depends on what the status code is. The relevant conditions being #1 and #7. "1. Any response ... with a 1xx (Informational), 204 (No Content), or 304 (Not Modified) status code is always terminated by

What happens in HTTP response to a GET request without Content-Length or Transfer-encoding?

由 只愿长相守 提交于 2021-02-18 06:41:49
问题 If a response to a GET request doesn't have the Content-Length or Transfer-encoding: chunked field, what happens? How does the client know when the message ends? 回答1: RFC 7230 section 3.3.3 contains a nice checklist of conditions for finding the message body size. Essentially it says the answer depends on what the status code is. The relevant conditions being #1 and #7. "1. Any response ... with a 1xx (Informational), 204 (No Content), or 304 (Not Modified) status code is always terminated by

How to get the HTTP response string using Curl in C++

由 杀马特。学长 韩版系。学妹 提交于 2021-02-18 00:53:28
问题 I'm very new to HTTP commands and the libcurl library. I know how to get the HTTP response code but not the HTTP response string. Following is the code snippet that I wrote to get the response code. Any help on how to get the response string will be highly appreciated!!! curl_easy_setopt(curl, CURLOPT_URL, url.c_str()); CURLcode ret = curl_easy_perform(curl); if (ret != CURLE_OK) { LOG(INFO) << "Failed to perform the request. " << "Return code: " << ret; return false; } std::unique_ptr<int64

How to pass headers for an XMLHttpRequest request

由 南笙酒味 提交于 2021-02-17 05:23:33
问题 I have an api which requires few headers to passed to get the response.Below is the working postman Now Iam doing an http call to consume this and below is the code Iam using var jobendpoint = 'http://rundeck:4440/api/14/project/Demo/jobs'; var http = new XMLHttpRequest(); http.open('GET',jobendpoint,false); http.setRequestHeader('Accept','application/json'); http.setRequestHeader('Content-type','application/json'); http.setRequestHeader('X-Rundeck-Auth-Token',

How to pass headers for an XMLHttpRequest request

由 旧时模样 提交于 2021-02-17 05:23:05
问题 I have an api which requires few headers to passed to get the response.Below is the working postman Now Iam doing an http call to consume this and below is the code Iam using var jobendpoint = 'http://rundeck:4440/api/14/project/Demo/jobs'; var http = new XMLHttpRequest(); http.open('GET',jobendpoint,false); http.setRequestHeader('Accept','application/json'); http.setRequestHeader('Content-type','application/json'); http.setRequestHeader('X-Rundeck-Auth-Token',

HTTP请求报文和响应报文

由 别等时光非礼了梦想. 提交于 2021-02-16 23:36:22
超文本传输协议(Hypertext Transfer Protocol，简称HTTP)是应用层的一种通信协议。它是一种请求/响应式的协议，即一个客户端与服务器建立连接后，向服务器发送一个请求;服务器接到请求后，给予相应的响应。于是，HTTP协议的报文便有了两种类型，分别是HTTP请求报文和HTTP响应报文。 一、HTTP请求报文 　　HTTP请求报文的基本格式如下图（图片来源于网络）所示： 从上图可以看到，整个请求报文主要由请求行，请求头部，空行和请求包体四个部分组成。 1、请求行 　　请求行由请求方法，URL，协议版本组成，每个部分中间用空格隔开。请求方法表示客户端希望服务器对资源进行什么操作。常见的方法主要有：GET、POST、HEAD、PUT、DELETE、OPTIONS、TRACE、CONNECT等。下面列出一些请求方法及其含义： GET： 请求指定的页面信息，并返回实体主体。 HEAD： 只请求页面的首部。 POST： 请求服务器接受所指定的文档作为对所标识的URI的新的从属实体。 PUT： 从客户端向服务器传送的数据取代指定的文档的内容。 DELETE： 请求服务器删除指定的页面。 OPTIONS： 允许客户端查看服务器的性能。 TRACE： 请求服务器在响应中的实体主体部分返回所得到的内容。 PATCH： 实体中包含一个表，表中说明与该URI所表示的原内容的区别。

How to properly close a request and continue processing it on the background

由 北战南征 提交于 2021-02-16 17:57:07
问题 For an incoming HTTP request, I had to respond with a 202 Accepted status code, while continue processing the payload in the background. for example purposes this is what I am currently doing: package main import ( "fmt" "log" "net/http" "time" "github.com/nbari/violetear" ) func sleep() { time.Sleep(3 * time.Second) fmt.Println("done...") } func index(w http.ResponseWriter, r *http.Request) { w.WriteHeader(http.StatusAccepted) go sleep() } func main() { router := violetear.New() router

How to show a table from a slice with my struct

由 こ雲淡風輕ζ 提交于 2021-02-11 18:26:11
问题 I want to show a table that each row contains my struct data. Here is my struct: type My_Struct struct { FIRST_FIELD string SECOND_FIELD string THIED_FIELD string } Here is my html code: <table id="t01"> <tr> <th>FIRST FIELD</th> <th>SECOND FIELD</th> <th>THIRD FIELD</th> </tr> <tr> <td>FIRST_OBJ_HERE_SHOULD_BE_THE_FIRST_FIELD</td> <td>FIRST_OBJ_HERE_SHOULD_BE_THE_SECOND_FIELD</td> <td>FIRST_OBJ_HERE_SHOULD_BE_THE_THIRD_FIELD</td> </tr> <tr> <td>SECOND_OBJ_HERE_SHOULD_BE_THE_FIRST_FIELD</td>

How to show a table from a slice with my struct

由 偶尔善良 提交于 2021-02-11 18:25:59
问题 I want to show a table that each row contains my struct data. Here is my struct: type My_Struct struct { FIRST_FIELD string SECOND_FIELD string THIED_FIELD string } Here is my html code: <table id="t01"> <tr> <th>FIRST FIELD</th> <th>SECOND FIELD</th> <th>THIRD FIELD</th> </tr> <tr> <td>FIRST_OBJ_HERE_SHOULD_BE_THE_FIRST_FIELD</td> <td>FIRST_OBJ_HERE_SHOULD_BE_THE_SECOND_FIELD</td> <td>FIRST_OBJ_HERE_SHOULD_BE_THE_THIRD_FIELD</td> </tr> <tr> <td>SECOND_OBJ_HERE_SHOULD_BE_THE_FIRST_FIELD</td>
订阅 http