TCP port check
package main
import ( "fmt" "net/http" "io")
func main() {
url := "https://api.dazrik.net/connect?target=example.com&port=443"
req, _ := http.NewRequest("GET", url, nil)
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close() body, _ := io.ReadAll(res.Body)
fmt.Println(res) fmt.Println(string(body))
}HttpRequest request = HttpRequest.newBuilder() .uri(URI.create("https://api.dazrik.net/connect?target=example.com&port=443")) .method("GET", HttpRequest.BodyPublishers.noBody()) .build();HttpResponse<String> response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());System.out.println(response.body());OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder() .url("https://api.dazrik.net/connect?target=example.com&port=443") .get() .build();
Response response = client.newCall(request).execute();import axios from 'axios';
const options = { method: 'GET', url: 'https://api.dazrik.net/connect', params: {target: 'example.com', port: '443'}};
try { const { data } = await axios.request(options); console.log(data);} catch (error) { console.error(error);}const url = 'https://api.dazrik.net/connect?target=example.com&port=443';const options = {method: 'GET'};
try { const response = await fetch(url, options); const data = await response.json(); console.log(data);} catch (error) { console.error(error);}use reqwest;
#[tokio::main]pub async fn main() { let url = "https://api.dazrik.net/connect";
let querystring = [ ("target", "example.com"), ("port", "443"), ];
let client = reqwest::Client::new(); let response = client.get(url) .query(&querystring) .send() .await;
let results = response.unwrap() .json::<serde_json::Value>() .await .unwrap();
dbg!(results);}curl --request GET \ --url 'https://api.dazrik.net/connect?target=example.com&port=443'Resolves the target to a single public IP and attempts a TCP connection to the given port.
Parameters
Section titled “Parameters”Query Parameters
Section titled “Query Parameters”Hostname or IP address to target.
Example
example.comTCP port (1-65535).
Example
443Responses
Section titled “Responses”Port check result
object
The validated input target
The resolved IP the connection was attempted against
Whether the TCP connection succeeded
Example
{ "ok": true, "query": "example.com", "address": "93.184.216.34", "port": 443, "opened": true}Headers
Section titled “Headers”IETF-draft combined rate-limit header for the current window: limit, remaining, and reset (seconds until the window resets). Sent on every response from a known endpoint.
Example
limit=60, remaining=59, reset=42Maximum requests allowed per client IP per window (60 requests per 60s).
Example
60Requests remaining in the current window before the limit is hit.
Example
59Seconds until the current window resets.
Example
42Missing or invalid parameter
Error response.
object
Example
{ "ok": false, "msg": "query param target is required"}Headers
Section titled “Headers”IETF-draft combined rate-limit header for the current window: limit, remaining, and reset (seconds until the window resets). Sent on every response from a known endpoint.
Example
limit=60, remaining=59, reset=42Maximum requests allowed per client IP per window (60 requests per 60s).
Example
60Requests remaining in the current window before the limit is hit.
Example
59Seconds until the current window resets.
Example
42Target resolves to a private/reserved address
Error response.
object
Example
{ "ok": false, "msg": "target doesn't resolve to a public addr"}Headers
Section titled “Headers”IETF-draft combined rate-limit header for the current window: limit, remaining, and reset (seconds until the window resets). Sent on every response from a known endpoint.
Example
limit=60, remaining=59, reset=42Maximum requests allowed per client IP per window (60 requests per 60s).
Example
60Requests remaining in the current window before the limit is hit.
Example
59Seconds until the current window resets.
Example
42Rate limit exceeded: either the per-client request limit (60 requests per minute) or, for endpoints that connect to the target, the per-destination outbound connection limit.
Error response.
object
Example
{ "ok": false, "msg": "you're being rate limited, try again later."}Headers
Section titled “Headers”IETF-draft combined rate-limit header for the current window: limit, remaining, and reset (seconds until the window resets). Sent on every response from a known endpoint.
Example
limit=60, remaining=59, reset=42Maximum requests allowed per client IP per window (60 requests per 60s).
Example
60Requests remaining in the current window before the limit is hit.
Example
59Seconds until the current window resets.
Example
42Seconds to wait before retrying. Sent only on a 429 response.
Example
42Unexpected server error
Error response.
object
Example
{ "ok": false, "msg": "unknown error"}Headers
Section titled “Headers”IETF-draft combined rate-limit header for the current window: limit, remaining, and reset (seconds until the window resets). Sent on every response from a known endpoint.
Example
limit=60, remaining=59, reset=42Maximum requests allowed per client IP per window (60 requests per 60s).
Example
60Requests remaining in the current window before the limit is hit.
Example
59Seconds until the current window resets.
Example
42