New HTTP protocol and test code

src/include/gpxe/http.h

@@ -0,0 +1,58 @@
+#ifndef _GPXE_HTTP_H
+#define _GPXE_HTTP_H
+
+/** @file
+ *
+ * Hyper Text Transport Protocol
+ *
+ */
+
+#include <stdint.h>
+#include <gpxe/tcp.h>
+#include <gpxe/async.h>
+
+/** HTTP default port */
+#define HTTP_PORT 80
+
+enum http_state {
+	HTTP_INIT_CONN = 0,
+	HTTP_REQUEST_FILE,
+	HTTP_PARSE_HEADER,
+	HTTP_RECV_FILE,
+	HTTP_DONE,
+};
+
+/**
+ * A HTTP request
+ *
+ */
+struct http_request;
+
+struct http_request {
+	/** TCP connection for this request */
+	struct tcp_connection tcp;
+	/** Current state */
+	enum http_state state;
+        /** File to download */
+        const char *filename;
+        /** Size of file downloading */
+        size_t file_size;
+	/** Number of bytes recieved so far */
+	size_t file_recv;
+	/** Callback function
+	 *
+	 * @v http	HTTP request struct
+	 * @v data	Received data
+	 * @v len	Length of received data
+	 *
+	 * This function is called for all data received from the
+	 * remote server.
+	 */
+	void ( *callback ) ( struct http_request *http, char *data, size_t len );
+	/** Asynchronous operation */
+	struct async_operation aop;
+};
+
+extern struct async_operation * get_http ( struct http_request *http );
+
+#endif /* _GPXE_HTTP_H */