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51 lines
1.2 KiB
51 lines
1.2 KiB
package clientserver |
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import ( |
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"errors" |
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"fmt" |
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"log" |
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"net/http" |
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"regexp" |
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"strconv" |
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"strings" |
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) |
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const MAX_PORT_NUM = 65535 |
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// Returns false if ipv4 `correct`. |
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func wrongIPAddresFormat(ipv4 string) bool { |
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re, err := regexp.Compile(`^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$`) |
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if err != nil { |
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log.Println(err) |
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} |
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return !re.Match([]byte(ipv4)) |
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} |
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func throwHTTPError(err_text string, code int, w *http.ResponseWriter) error { |
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http.Error(*w, err_text, code) |
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eText := fmt.Sprintf("Error: %d %vr", code, err_text) |
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return errors.New(eText) |
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} |
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// Wait string in format "10.10.10.10:8080", where `10.10.10.10` IPv4, |
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// and `8080` port. If ip or port has wrong format, returns error. |
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func ParsePartnersAddress(ipAndPort string) (string, int64, error) { |
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var err error |
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iap := strings.Split(ipAndPort, ":") |
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ip := iap[0] |
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if wrongIPAddresFormat(ip) { |
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err = errors.New(fmt.Sprintf("Wrong ip address format in partner ip: %v", ip)) |
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} |
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port, e := strconv.ParseInt(iap[1], 10, 32) |
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if e != nil { |
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err = errors.New(fmt.Sprintf("Wrong port format in partner ip: %v", e)) |
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} |
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if port > MAX_PORT_NUM { |
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err = errors.New(fmt.Sprintf("Wrong port in partner ip: grater than %v", MAX_PORT_NUM)) |
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} |
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return ip, port, err |
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}
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