Identity Server endpoints unreachable

[kronthto]

dendrite/clientapi/threepid/threepid.go

Lines 61 to 74 in e546df2

	postURL := fmt.Sprintf("https://%s/_matrix/identity/api/v1/validate/email/requestToken", req.IDServer)
	data := url.Values{}
	data.Add("client_secret", req.Secret)
	data.Add("email", req.Email)
	data.Add("send_attempt", strconv.Itoa(req.SendAttempt))
	request, err := http.NewRequest(http.MethodPost, postURL, strings.NewReader(data.Encode()))
	if err != nil {
	return "", err
	}
	request.Header.Add("Content-Type", "application/x-www-form-urlencoded")
	resp, err := client.DoHTTPRequest(ctx, request)

When an IDServer definition without port (like "matrix.org") is used, the fclient implementation will attempt matrix federation traffic.

https://matrix-federation.matrix.org/_matrix/identity/api/v1/validate/email/requestToken does not exist however, only
https://matrix.org:443/_matrix/identity/api/v1/validate/email/requestToken does.