HttpHeaders() {
head.before = head.after = head;
}
void remove() {
before.after = after;
after.before = before;
}
void addBefore(HeaderEntry e) {
after = e;
before = e.before;
before.after = this;
after.before = this;
}
void clearHeaders() {
for (int i = 0; i < entries.length; i++) {
entries[i] = null;
}
head.before = head.after = head;
}