in hpack/src/main/java/com/twitter/hpack/Encoder.java [291:305]
private int getIndex(byte[] name) {
if (length() == 0 || name == null) {
return -1;
}
int h = hash(name);
int i = index(h);
int index = -1;
for (HeaderEntry e = headerFields[i]; e != null; e = e.next) {
if (e.hash == h && HpackUtil.equals(name, e.name)) {
index = e.index;
break;
}
}
return getIndex(index);
}