40b8afb150
Backend stability and security improvements: * internal/util/ — common RandomHex helper, removed 3 duplicates * ESL: deduplicated readMessage (locked/unlocked), net.JoinHostPort for IPv6 * AMI: synchronous reconnect() in readEventsLoop, net.JoinHostPort for IPv6 * Auth: /api/auth/refresh accepts Authorization header only (no ?token=) * decodeJSON: http.MaxBytesReader(1<<20) body limit * Trunks: gatewayParams() uses configured ESL.GatewayPrefix * Config: jwt_secret_env env-var fallback * FSCollector: time.After → time.NewTimer with defer Stop * Monitoring: Prometheus counters (route_requests, nodes_total/healthy, uptime) * go fmt pass across all internal/ packages
19 lines
427 B
Go
19 lines
427 B
Go
package util
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import (
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"crypto/rand"
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"encoding/hex"
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"fmt"
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"time"
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)
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// RandomHex генерирует случайную hex-строку из n байт.
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// При ошибке crypto/rand использует time-based fallback.
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func RandomHex(n int) string {
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b := make([]byte, n)
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if _, err := rand.Read(b); err != nil {
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return fmt.Sprintf("%x", time.Now().UnixNano())[:n*2]
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}
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return hex.EncodeToString(b)[:n*2]
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}
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