Please set the HttpRequest of HttpClientSseClientTransport default charset encoding to UTF-8.

[pcalpha]

When I call the tool which name is Chinese encoding, The mcp client will throws Exception below.

Exception in thread "main" io.modelcontextprotocol.spec.McpError: Tool not found: 天���
at io.modelcontextprotocol.spec.McpClientSession.lambda$sendRequest$11(McpClientSession.java:248)
Suppressed: The stacktrace has been enhanced by Reactor, refer to additional information below:

The tool name is messy code.
So please set the HttpRequest of HttpClientSseClientTransport default request encoding to UTF-8.
Please set the encoding of the http request to UTF-8.

sendMessage in HttpClientSseClientTransport.java

String jsonText = this.objectMapper.writeValueAsString(message);
			URI requestUri = Utils.resolveUri(baseUri, endpoint);
			HttpRequest request = this.requestBuilder.uri(requestUri)
				.setHeader("Content-Type", "application/json;charset=UTF-8")
				.POST(HttpRequest.BodyPublishers.ofString(jsonText))
				.build();