func ParseServiceBlock(jw *jsonw.Wrapper) (sb *ServiceBlock, err error) {
var social bool
var typ, id string
if prot, e1 := jw.AtKey("protocol").GetString(); e1 == nil {
var hostname string
jw.AtKey("hostname").GetStringVoid(&hostname, &e1)
if e1 == nil {
switch prot {
case "http:":
typ, id = "http", hostname
case "https:":
typ, id = "https", hostname
}
} else if domain, e2 := jw.AtKey("domain").GetString(); e2 == nil && prot == "dns" {
typ, id = "dns", domain
}
} else {
var e2 error
jw.AtKey("name").GetStringVoid(&typ, &e2)
jw.AtKey("username").GetStringVoid(&id, &e2)
if e2 != nil {
id, typ = "", ""
} else {
social = true
}
}
if len(typ) == 0 {
err = fmt.Errorf("Unrecognized Web proof @%s", jw.MarshalToDebug())
}
sb = &ServiceBlock{social: social, typ: typ, id: id}
return
}