reasons.go

package main

var reasons map[int]string

func init() {
	reasons = map[int]string{
		100: "Trying",
		180: "Ringing",
		181: "Call Is Being Forwarded",
		182: "Queued",
		183: "Session Progress",
		200: "OK",
		202: "Accepted",
		300: "Multiple Choices",
		301: "Moved Permanently",
		302: "Moved Temporarily",
		305: "Use Proxy",
		380: "Alternative Service",
		400: "Bad Request",
		401: "Unauthorized",
		402: "Payment Required",
		403: "Forbidden",
		404: "Not Found",
		405: "Method Not Allowed",
		406: "Not Acceptable",
		407: "Proxy Authentication Required",
		408: "Request Timeout",
		410: "Gone",
		413: "Request Entity Too Large",
		414: "Request-URI Too Long",
		415: "Unsupported Media Type",
		416: "Unsupported URI Scheme",
		420: "Bad Extension",
		421: "Extension Required",
		423: "Interval Too Brief",
		480: "Temporarily Unavailable",
		481: "Call transaction Does Not Exist",
		482: "Loop Detected",
		483: "Too Many Hops",
		484: "Address Incomplete",
		485: "Ambiguous",
		486: "Busy Here",
		487: "Request Terminated",
		488: "Not Acceptable Here",
		489: "Bad Event",
		491: "Request Pending",
		493: "Undecipherable",
		500: "Server Internal Error",
		501: "Not Implemented",
		502: "Bad Gateway",
		503: "Service Unavailable",
		504: "Server Tim",
		505: "Version Not Supported",
		513: "message Too Large",
		600: "Busy Everywhere",
		603: "Decline",
		604: "Does Not Exist Anywhere",
		606: "SESSION NOT ACCEPTABLE",
	}
}

func StatusCode2Reason(code int) string {
	if s, ok := reasons[code]; ok {
		return s
	}

	return "unknown reason"
}