ok2c commented on PR #620:
URL:
https://github.com/apache/httpcomponents-core/pull/620#issuecomment-3914630016
@arturobernalg I would rewrite it as
```
@Override
public void process(final HttpRequest request, final EntityDetails
entity, final HttpContext localContext)
throws HttpException, IOException {
Args.notNull(request, "HTTP request");
for (int i = 0; i < illegalHeaderNames.length; i++) {
final String headerName = illegalHeaderNames[i];
if (request.containsHeader(headerName)) {
if (HttpHeaders.TE.equalsIgnoreCase(headerName)) {
validateTE(request);
} else {
throw new ProtocolException("Header '%s' is illegal for
HTTP/2 messages", headerName);
}
}
}
}
private static void validateTE(final HttpRequest request) throws
ProtocolException {
boolean sawAnyToken = false;
boolean sawInvalidToken = false;
for (final Iterator<String> it =
MessageSupport.iterateTokens(request, HttpHeaders.TE); it.hasNext(); ) {
final String token = it.next();
sawAnyToken = true;
if (!"trailers".equalsIgnoreCase(token)) {
sawInvalidToken = true;
break;
}
}
if (sawInvalidToken || !sawAnyToken) {
throw new ProtocolException("Header '%s' is illegal for HTTP/2
messages", HttpHeaders.TE);
}
}
```
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