How does a proxy IP set global variables in Postman?

I. Basic Understanding of Postman Global Variables

For test scenarios that require frequent proxy switching, it is very inefficient to manually change the proxy settings for each request; Postman's global variables feature allows you toSaving the agent configuration as a generic parameterThe first step is to set up a proxy IP service (e.g., ipipgo), so that it can be set up once and take effect for all users. Special attention should be paid to the use of high-quality proxy IP services (e.g. ipipgo) to ensure the stability of the interface test, to avoid the failure of the request due to IP quality problems.

Second, get ipipgo proxy IP information

Before you start the setup, you need to prepare the proxy server information. Take ipipgo as an example, you can get it on the "Connection Information" page after logging into the console:

ipipgo支持HTTP/HTTPS/SOCKS5多协议代理，根据测试需求选择对应类型。如果涉及加密传输，建议使用HTTPS协议。

Step-by-Step Setting of Proxy Global Variables

1. Open the Postman upper right corner of theEnvironmental management icons
2. Create a new variable in the Globals tab:
- Variable name: proxy_config
- Initial value: {"server": "gateway.ipipgo.net", "port". 8000}
3. Click "Persist All" to save the settings.

It is recommended that authentication information be stored separately assecret_proxy_authVariables to avoid leakage of sensitive information. ipipgo supports multiple authentication methods and recommends using API key authentication for more security.

IV. Invoking proxy configuration in a request

After creating a new request, go to the "Proxy" configuration page:
1. Check "Add a custom proxy configuration".
2. Protocol type select the proxy protocol that matches the ipipgo account
3. In the server address field, type{{proxy_config.server}}
4. Port field entry{{proxy_config.port}}
5. Completion of accreditation information{{secret_proxy_auth}}

After the test passes, all new requests will automatically inherit this proxy configuration. If using ipipgo's dynamic residential IP, it is recommended to set theTimed update of variable valuesto switch the IP address.

V. Verify that the agent is in effect

After sending a test request, check two places in the Postman console:
1. In the response headerX-Forwarded-ForWhether the field displays the IP address of the ipipgo
2. Is there in the console outputProxy-AuthorizationTips for successful authentication
If you are experiencing connection problems, you can first use the ipipgo-providedOnline testing toolsVerify the proxy server status.

Frequently Asked Questions QA

Q: I set up a proxy but the request didn't take effect?
A: Check three settings: ① whether the global variable name is spelled correctly ② whether the proxy protocol matches ③ whether the IP whitelist is added to the local IP

Q: HTTPS request prompts certificate error?
A: Disable "SSL certificate verification" in Postman settings, or contact ipipgo technical support to get a special certificate.

Q: How to realize switching agents for different environments?
A: Create multiple environment variables (e.g. dev/prod) and change the proxy configuration in bulk via the environment switch button. ipipgo supports configuring multiple geographic proxy groups at the same time, which is convenient for geographic testing.

By judicious use of Postman's variable functions, in conjunction with the ipipgo-provided90 million + residential IP resourcesrespond in singingMillisecond switching technologyIt can significantly improve the efficiency of interface testing. It is recommended to encapsulate the proxy configuration into a team-shared Collection to facilitate collaborative development of a unified network environment.