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52 lines
1.2 KiB
52 lines
1.2 KiB
2 years ago
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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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