How to Set A Proxy For Curl?

To set a proxy for curl, you can use the -x or --proxy flag followed by the proxy address and port number.

Here's how you can do it:

1. Open your terminal or command prompt.
2. Use the following syntax: curl -x Replace with the actual proxy address and port number, and with the URL you want to fetch or download using curl.

Example:

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curl -x 127.0.0.1:8080 https://example.com

This command will make curl use the proxy located at 127.0.0.1 on port 8080, and fetch the webpage at https://example.com.

Note: If your proxy requires authentication or you need to specify a username and password, you can add it to the proxy address using the user:password@ format. For example: username:password@proxy_address:port.

That's it! You have successfully set a proxy for curl and can now make requests through the specified proxy.

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What is a forward proxy for curl?

A forward proxy for curl is a proxy server that is used to forward HTTP requests from the client (curl) to the destination server. When curl is configured to use a forward proxy, it sends its HTTP requests to the proxy server instead of directly to the destination server.

The forward proxy then acts as an intermediary between the client and the server. It receives the request from the client, forwards it to the destination server, and then sends the response back to the client. This allows the client to access the internet through the proxy server, which can provide additional benefits such as caching, filtering, or anonymity.

To use a forward proxy with curl, you can specify the proxy server's IP address and port using the "-x" or "--proxy" option, followed by the proxy server's address. For example:

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curl -x <proxy-server-ip>:<proxy-server-port> <url>

Replace <proxy-server-ip> and <proxy-server-port> with the actual IP address and port of the forward proxy server, and <url> with the URL you want to request through the proxy.

What is the default proxy setting for curl?

The default proxy setting for curl is typically to not use any proxy.

What is the command to set a proxy for curl in macOS?

The command to set a proxy for curl in macOS is:

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export http_proxy=http://proxy.example.com:port

Replace proxy.example.com with the actual proxy server address and port with the port number.

How to set a proxy for curl in Ruby?

To set a proxy for curl in Ruby, you can use the curl library in Ruby or the Net::HTTP library along with the Proxy class. Here are examples of how to set a proxy using either approach:

Using the curl library:

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require 'curl'

curl = Curl::Easy.new('https://example.com')
curl.proxy_url = 'http://your_proxy_address:proxy_port'
curl.proxy_type = Curl::CURLPROXY_HTTP # Change this to the appropriate proxy type if needed

curl.perform
puts curl.body_str

Using the Net::HTTP library:

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require 'net/http'

proxy_address = 'your_proxy_address'
proxy_port = proxy_port

uri = URI.parse('https://example.com')
http = Net::HTTP.new(uri.host, uri.port, proxy_address, proxy_port)
http.use_ssl = true

request = Net::HTTP::Get.new(uri.request_uri)

response = http.request(request)
puts response.body

Replace 'https://example.com' with the URL you want to make the request to, and 'http://your_proxy_address:proxy_port' with the proxy address and port you want to use.

How to bypass proxy for certain URLs with curl?

To bypass a proxy for certain URLs with curl, you can use the --noproxy option followed by a comma-separated list of URLs for which the proxy should be bypassed.

Here's an example command to bypass the proxy for a specific URL with curl:

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curl --noproxy "example.com" http://example.com/api/endpoint

In the above command, the proxy will be bypassed for the http://example.com/api/endpoint URL.

If you want to bypass the proxy for multiple URLs, you can separate them with commas:

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curl --noproxy "example.com,api.example.com" http://example.com/api/endpoint

In this case, the proxy will be bypassed for both example.com and api.example.com URLs.

Note that the --noproxy option only works for the specific URLs mentioned and will not apply to any other URLs.