On Wed, 2013-09-11 at 16:38 +0200, Jacek Caban wrote:
Hi Hans,
On 09/11/13 13:50, Hans Leidekker wrote:
static DWORD chunked_get_avail_data(data_stream_t *stream, http_request_t *req) { - /* Allow reading only from read buffer */ + chunked_stream_t *chunked_stream = (chunked_stream_t*)stream; + DWORD res; + + if(!chunked_stream->chunk_size || chunked_stream->chunk_size == ~0u) { + res = start_next_chunk(chunked_stream, req); + if(res != ERROR_SUCCESS) + return 0; + }
start_next_chunk may block and we don't want chunked_get_avail_data to block.
We can't avoid that. If this is the first chunk or if the current chunk has been consumed we need to read a couple of bytes to find out how much we can expect. Network traces tell me that native also performs a read on the first call to InternetQueryDataAvailable.