SG cURL Command Generator

SanchitGurukul Networking Utility

cURL Command Generator

Build readable cURL commands for HTTP/HTTPS, REST APIs, authentication, file transfers, TLS, proxies, troubleshooting, and client/server labs.

SG
Privacy and authorization: everything is generated in your browser. WordPress does not execute requests or store URLs, credentials, tokens, cookies, headers, or payloads. Test only systems you own or are authorized to assess.

Command builder

Target URL builder

Use 80/443 or a custom port such as 8080/8443.
Live URLhttps://example.com/
Avoid real secrets in command lines because they can appear in shell history and process listings. Prefer environment variables or protected configuration files.
Useful options

Generated command

curl --compressed --fail-with-body --connect-timeout 10 --max-time 30 --retry 2 --retry-all-errors 'https://example.com/'

What it does

Sends a basic HTTPS GET request to port 443.

Client/server model

  1. cURL client builds the request from protocol, host, port, path, method, headers, body, and options.
  2. DNS resolves the hostname unless an authorized override is used.
  3. Transport connects to the selected port. HTTPS also negotiates TLS and verifies the certificate.
  4. Server processes routing, authentication, and application logic.
  5. Response returns a status code, headers, and optional body.
  6. cURL prints, saves, or measures the response according to the selected options.
Troubleshooting order: verify host/IP → port → DNS → TCP connectivity → TLS trust → HTTP status → headers/authentication → response body.

Predefined command library

Copy and adapt these examples for systems you control.

Practical testing scenarios

HTTP server on a custom port

Start a temporary server and connect to port 8000.

python3 -m http.server 8000
curl -v 'http://127.0.0.1:8000/'

HTTPS service on port 8443

Test an authorized HTTPS application using a non-standard port.

curl -v 'https://app.example.test:8443/health'

REST API validation

Check status, content type, authentication, and JSON response.

curl --fail-with-body -H 'Accept: application/json' -H "Authorization: Bearer $API_TOKEN" 'https://api.example.com:443/v1/health'

TLS lab verification

Compare normal certificate validation with isolated diagnostic mode.

curl -v 'https://lab.example.test:8443/'
curl -vk 'https://lab.example.test:8443/'

Virtual-host DNS override

Connect a hostname to a private lab IP without changing public DNS.

curl --resolve 'app.example.test:8443:192.168.1.20' 'https://app.example.test:8443/'

Performance timing

Measure DNS, connection, TLS, first byte, total time, and status.

curl -sS -o /dev/null -w 'dns=%{time_namelookup} connect=%{time_connect} tls=%{time_appconnect} ttfb=%{time_starttransfer} total=%{time_total} status=%{http_code}\n' 'https://example.com/'

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