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https://issues.apache.org/jira/browse/HTTPCLIENT-2266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17704141#comment-17704141
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Michael Osipov commented on HTTPCLIENT-2266:
--------------------------------------------
What error message? It comes from the server. Shit is sent to the server and
the server detects that and properly rejects with 400. What do you want to see
here improved?
> UTF-8 chars unsupported in query params
> ---------------------------------------
>
> Key: HTTPCLIENT-2266
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2266
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient (classic)
> Affects Versions: 5.2.1
> Reporter: Karl-Johan Karlberg
> Priority: Major
>
> Trying to upgrade from HttpClient 4.5.13 to HttpClient 5.2.1 we have ONE test
> failing in a scary way.
> The test spins up a httpserver and we use httpclient to do a simple query
> with "scary Swedish chars in the query".
> Here is the call that works with httpclient 4.5.x and fails with httpclient
> 5.2.1
> {code:java}
> try (CloseableHttpClient client = HttpClientBuilder.create().build()) {
> URI uri = new
> URI("http://localhost:4711/v1/discovery/services?serviceName=Fräs";);
> String s = client.execute(new HttpGet(uri), new
> HttpClientResponseHandler<String>() {
> @Override
> public String handleResponse(ClassicHttpResponse response) throws
> HttpException, IOException {
> return EntityUtils.toString(response.getEntity(), "UTF-8");
> }
> });
> System.out.println(s);
> } catch (IOException e) {
> throw new RuntimeException(e);
> } {code}
>
> This code results in printout of (and of cause http status 400):
> {code:java}
> <h1>Bad Message 400</h1><pre>reason: Bad Request</pre> {code}
> HttpClient 4.5 prints "whatever the server responded and whatever
> statuscode". If you give a dummy non existent path a 404 is retuned. But as
> soon as we switch back to 5.2.1 it responds 400 (without exception and the
> evil text "reason: Bad Request")
> Debugging though the inner workings of httpclient renders nothing out of the
> ordinary and if we URLEncode the "nasty" chars it works.
>
> I.e. it works when request uri is done like:
> {code:java}
> URI uri = new URI("http://localhost:9112/v1/discovery/services?"+
> URLEncoder.encode("Fräs", "UTF-8"));{code}
>
>
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