egutierrez
bd9383fd82
12 funciones puras con implementación real: HashSHA256, HashMD5, EntropyShannon, IsBase64, IsHex, ExtractURLs, ParseIPCIDR, IPInRange, NormalizeURL, DetectSQLInjection, LevenshteinDistance, JaccardSimilarity 4 funciones impuras con implementación real (stdlib): LookupWhois, ResolveDNS, FetchHTTPHeaders, ScanPortTCP Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
28 lines
572 B
Go
28 lines
572 B
Go
package cybersecurity
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import (
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"fmt"
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"net/http"
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"time"
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)
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// FetchHTTPHeaders realiza una solicitud HTTP HEAD a la URL y devuelve los headers de respuesta.
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func FetchHTTPHeaders(url string) (map[string][]string, error) {
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client := &http.Client{
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Timeout: 10 * time.Second,
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}
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resp, err := client.Head(url)
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if err != nil {
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return nil, fmt.Errorf("error realizando solicitud HEAD a %s: %w", url, err)
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}
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defer resp.Body.Close()
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headers := make(map[string][]string, len(resp.Header))
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for k, v := range resp.Header {
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headers[k] = v
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}
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return headers, nil
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}
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