Proxie 2 4 1 – Http Debugging Proxy Settings

1. Proxie 2 4 1 – Http Debugging Proxy Settings Chrome
2. Proxie 2 4 1 – Http Debugging Proxy Settings Google Chrome
3. Proxie 2 4 1 – Http Debugging Proxy Settings Windows 10

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• Apache HttpClient Tutorial

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In this chapter, we will learn how to create a HttpRequest authenticated using username and password and tunnel it through a proxy to a target host, using an example.

Step 1 - Create a CredentialsProvider object

The CredentialsProvider Interface maintains a collection to hold the user login credentials. You can create its object by instantiating the BasicCredentialsProvider class, the default implementation of this interface.

Step 2 - Set the credentials

You can set the required credentials to the CredentialsProvider object using the setCredentials() method. This method accepts two objects −

• AuthScope object − Authentication scope specifying the details like hostname, port number, and authentication scheme name.

• Credentials object − Specifying the credentials (username, password). Set the credentials using the setCredentials() method for both host and proxy as shown below.

Step 3 - Create an HttpClientBuilder object

Create a HttpClientBuilder using the custom() method of the HttpClients class as shown below −

Step 4 - Set the CredentialsProvider

You can set the CredentialsProvider object to a HttpClientBuilder object using the setDefaultCredentialsProvider() method. Pass the previously created CredentialsProvider object to this method.

Step 5 - Build the CloseableHttpClient

Build the CloseableHttpClient object using the build() method.

Step 6 - Create the proxy and target hosts

Create the target and proxy hosts by instantiating the HttpHost class.

Step 7 - Set the proxy and build a RequestConfig object

Create a RequestConfig.Builder object using the custom() method. Set the previously created proxyHost object to the RequestConfig.Builder using the setProxy() method. Finally, build the RequestConfig object using the build() method.

Step 8 - Create a HttpGet request object and set config object to it.

Create a HttpGet object by instantiating the HttpGet class. Set the config object created in the previous step to this object using the setConfig() method.

Step 9 - Execute the request

Execute the request by passing the HttpHost object (target) and request (HttpGet) as parameters to the execute() method.

Example

Following example demonstrates how to execute a HTTP request through a proxy using username and password.

Output

On executing, the above program generates the following output −

Manifest

You must declare the 'proxy' permission in the extension manifest to use the proxy settings API. For example:

Objects and properties

Proxy settings are defined in a proxy.ProxyConfig object. Depending on Chrome's proxy settings, the settings may contain proxy.ProxyRules or a proxy.PacScript.

Proxie 2 4 1 – Http Debugging Proxy Settings Chrome

Proxy modes

A ProxyConfig object's mode attribute determines the overall behavior of Chrome with regards to proxy usage. It can take the following values:

direct

In direct mode all connections are created directly, without any proxy involved. This mode allows no further parameters in the ProxyConfig object.

auto_detect

In auto_detect mode the proxy configuration is determined by a PAC script that can be downloaded at http://wpad/wpad.dat. This mode allows no further parameters in the ProxyConfig object.

pac_script

In pac_script mode the proxy configuration is determined by a PAC script that is either retrieved from the URL specified in the proxy.PacScript object or taken literally from the data element specified in the proxy.PacScript object. Besides this, this mode allows no further parameters in the ProxyConfig object.

fixed_servers

In fixed_servers mode the proxy configuration is codified in a proxy.ProxyRules object. Its structure is described in Proxy rules. Besides this, the fixed_servers mode allows no further parameters in the ProxyConfig object.

system

In system mode the proxy configuration is taken from the operating system. This mode allows no further parameters in the ProxyConfig object. Note that the system mode is different from setting no proxy configuration. In the latter case, Chrome falls back to the system settings only if no command-line options influence the proxy configuration.

Proxy rules

The proxy.ProxyRules object can contain either a singleProxy attribute or a subset of proxyForHttp, proxyForHttps, proxyForFtp, and fallbackProxy.

In the first case, HTTP, HTTPS and FTP traffic is proxied through the specified proxy server. Other traffic is sent directly. In the latter case the behavior is slightly more subtle: If a proxy server is configured for the HTTP, HTTPS or FTP protocol, the respective traffic is proxied through the specified server. If no such proxy server is specified or traffic uses a different protocol than HTTP, HTTPS or FTP, the fallbackProxy is used. If no fallbackProxy is specified, traffic is sent directly without a proxy server.

Proxy server objects

A proxy server is configured in a proxy.ProxyServer object. The connection to the proxy server (defined by the host attribute) uses the protocol defined in the scheme attribute. If no scheme is specified, the proxy connection defaults to http.

Bypass list

Individual servers may be excluded from being proxied with the bypassList. This list may contain the following entries:

Bypass list

Individual servers may be excluded from being proxied with the bypassList. This list may contain the following entries:

Proxie 2 4 1 – Http Debugging Proxy Settings Google Chrome

Examples

The following code sets a SOCKS 5 proxy for HTTP connections to all servers but foobar.com and uses direct connections for all other protocols. The settings apply to regular and incognito windows, as incognito windows inherit settings from regular windows. Please also consult the Types API documentation.

The following code sets a custom PAC script.

The next snippet queries the currently effective proxy settings. The effective proxy settings can be determined by another extension or by a policy. See the Types API documentation for details.

Note that the value object passed to set() is not identical to the value object passed to callback function of get(). The latter will contain a rules.proxyForHttp.port element.

Summary

Types

Scheme

Mode

ProxyServer

ProxyRules

PacScript

ProxyConfig

Properties

Events

onProxyError

Notifies about proxy errors.

Proxie 2 4 1 – Http Debugging Proxy Settings Windows 10

addListener