libwebsockets/lib/extension-deflate-stream.h

#include <zlib.h>

#define DEFLATE_STREAM_CHUNK 128
#define DEFLATE_STREAM_COMPRESSION_LEVEL 1

struct lws_ext_deflate_stream_conn {
	z_stream zs_in;
	z_stream zs_out;
	int remaining_in;
	unsigned char buf_in[LWS_MAX_SOCKET_IO_BUF];
	unsigned char buf_out[LWS_MAX_SOCKET_IO_BUF];
};

extern int lws_extension_callback_deflate_stream(
	struct lws_context *context, const struct lws_extension *ext,
	struct lws *wsi, enum lws_extension_callback_reasons reason,
	void *user, void *in, size_t len);