Might depend on the server block size or tcp buffers, as it will not wait till the buffers are filled, it only processes the data available in a single read.
Gruss Bernd -- http://bernd.eckenfels.net ________________________________ Von: Joan grupoventus <joan.balagu...@grupoventus.com> Gesendet: Friday, January 8, 2021 4:57:27 PM An: 'HttpClient User Discussion' <httpclient-users@hc.apache.org> Betreff: Response buffer size Hello, � I’m using HttpClient 4.5.7. reading responses from a backend through a ‘HttpAsyncResponseConsumer’ on the ‘consumeContent’ method in this way: � while ( (numBytesRead = decoder.read(this.bbuf)) > 0 ) { ( . . . ) } where this.bbuf = ByteBuffer.allocate(32768); The buffer size in the async http instance is configured in this way (‘phccm’ is a ‘PoolingNHttpClientConnectionManager’): this.phccm.setDefaultConnectionConfig(ConnectionConfig.custom().setBufferSize(32768).setFragmentSizeHint(32768).build() And on the IOReactor: IOReactorConfig ioReactorConfig = IOReactorConfig.custom().setRcvBufSize(32768) ... But when we start reading the response on the consume content method, the byte buffer is filled out just with 16K of data: Cycle 0 :: bytes read = 15812, total size (K) = 15 Cycle 1 :: bytes read = 16368, total size (K) = 31 Cycle 2 :: bytes read = 16376, total size (K) = 47 Cycle 3 :: bytes read = 16384, total size (K) = 63 Cycle 4 :: bytes read = 16376, total size (K) = 79 Cycle 5 :: bytes read = 16384, total size (K) = 95 Cycle 6 :: bytes read = 16376, total size (K) = 111 Cycle 7 :: bytes read = 16384, total size (K) = 127 � What am I missing? � Thanks, � Joan. �
