This extension enables torrents to update based on data stored in the BitTorrentDHT [1], rather than an HTTP server. The publisher has control over whenthe torrent is updated, and which content it contains, via mutable DHT items. Itis similar to BEP 39 [2], with the difference being that it uses the DHTto notify and be notified about updates of a torrent, hence should provide moredecentralized capabilities to both publishers and consumers.
The intention is to allow publishers to serve content that might change overtime in a more decentralized fashion. Consumers interested in the publisher'scontent only need to know their public key + optional salt. For instance,entities like Archive.org could publish their database dumps, and benefit fromnot having to maintain a central HTTP feed server to notify consumers aboutupdates.
Salt torrent
BEP 39 [2] allows to automatically update torrents based on HTTP URLs.With DHT storing capabilities [1], we can implement similar functionalityin a more decentralized fashion without resorting to central HTTP servers, andusing features already present in the BitTorrent network (mainly DHT store).
Publishers should issue a mutable put request when they want to notifyconsumers about an update of a torrent. The value of the payload v containsa dictionary with key ih (info hash) and value the 20 byte infohash of suchtorrent. Note that while a DHT entry under a particular key maps to a single torrentat any given moment, many different keys can point to the same torrent.
Consumers issue a get request using the target ID of the mutable item theyare interested in. Periodically polling such ID by issuing get requests tosee whether the v property of the response has updated. If an update isfound, the torrent can be updated using the infohash found in the response.
Llevaba casi tres años publicado este caché y nadie parece haberse acercado hasta aquí hasta ahora. Con la intención de dejar atrás las lorzas turroneras de las fiestas navideñas, me armo de valor y tiro monte arriba siguiendo una ruta de wikiloc. He seguido el camino sin contratiempos y sin perder mucho tiempo para orientarme, quitado de los últimos 70 metros, que en principio he ido directo hacía el cache y me ha tocado volver un tramo, para rodear primero por la izquierda y ganados unos 40 metros de altura girar a la derecha, para ahora si encarar el tramo final. Llegados al hito enorme próximo al caché, el viento a comenzado a soplar con fuerza y si en un principio pensaba merendar ahí antes de iniciar el camino de vuelta, finalmente he merendando mucho más abajo, pasado el tramo con el cable. El contenedor se encuentra rápido, estando en perfecto estado y el logbook impoluto, firmo rápido y bajo con cierta urgencia, antes que el viento vaya a más. Las vistas son espectaculares y cuesta ver donde ha quedado el coche aparcado en el pueblo. El torrente queda para otra ocasión, tendrá que ser bien acompañado, con el equipo pertinente y sobre todo con mucho valor. Gracias por traerme hasta aquí, ha sido una experiencia increíble y por ello dejo un favorito. Un saludo.
It had been almost three years since this cache was published and nobody seems to have gotten this far until now. With the intention of leaving behind the extra kilograms of the Christmas holidays, I'm full of courage and I'm heading uphill following a wikiloc route. I followed the road without setbacks and without losing a lot of time to orientate myself, removed from the last 70 meters, which in principle I went straight to the cache and I had to return a stretch, to circle first on the left and gained about 40 meters height turn to the right, for now if you face the final stretch. At the huge milestone next to the cache, the wind started to blow hard and if at first I thought to have lunch there before starting the way back, I finally had a snack much lower, past the stretch with the cable. The container is fast, being in perfect condition and the logbook clean, I sign fast and low with some urgency, before the wind is over. The views are spectacular and it is hard to see where the car has been parked in the town. The torrent is for another time, it will have to be well accompanied, with the relevant team and above all with a lot of courage. Thanks for bringing me here, it has been an incredible experience and therefore I leave a favorite. A greeting.
On the north, at the embouchure of the Jordan, a low promontory is in process of gradual formation by the muddy deposits brought down by the river. It is mostly bare, destitute of all vegetation, and, like the adjoining plain, covered with a nitrous crust. At present it projects into the lake more than a mile. When the water is very high, a portion is overflowed. To the westward lies a deep bay, and beyond it a long, low isthmus, covered with cairns of loose: rounded stones. De Saulcy has given to this isthmus the name Rejum Lut, "Lot's ruin;" but this name is not heard on the spot. The ruins are shapeless and desolate. They are of the highest antiquity, and may perhaps be of the era of the "cities of the plain." The shoreline now trends, with an easy curve, to the southwest, and then to the south, until it reaches the bold headland of Ras el-Feshkhah. So far it is flat and sandy, and the adjoining plain dreary and naked, save where, at long intervals, a little brackish spring rises, or a tiny streamlet flows, and there cane brakes and shrubberies of tamarisk are seen. Ridges of drift mark the waterline, and are composed of broken canes and willow branches, with trunks of palms, poplars, and other trees, half imbedded in slimy mud, and all covered with incrustations of salt.
A short distance south of the Wady Zuweireh is Jebel Usdum, a range of hills running from north to south a distance of seven miles, with an average elevation of three hundred feet, composed of a solid mass of rock salt. The top and sides are covered with a thick coating of marl, gypsum. and gravel, probably the remains of the Post-tertiary deposit uplifted upon the salt. The declivities of the range are steep and rugged, pierced with huge caverns, and the summit shows a serried line of sharp peaks. The salt is of a greenish-white color, with lines of cleavage as if stratified, and its base reaches far beneath the present surface. The name of the range, Khashm Usdum, appears to preserve a memorial of the ancient guilty "city of the plain." SEE SODOM.
The shoreline runs for nearly three miles southward along the base of Jebel Usdum, and then sweeps sharply round to the east, leaving on the south a naked, miry plain called Sabkah, ten miles long from north to south by about six wide. It is in summer coated with a saline crust, but is so low that when the water is high a large section of it is flooded. Numerous torrent beds from the salt range on the west, and from the higher ground of the Arabah on the south, run across it, converting large portions into impassable swamps. On its southern border the old diluvium terrace rises like a white wall to a height of more than two hundred feet. It is only on getting close to it that the sides are seen to be rent and torn into a thousand fantastic forms by winter torrents and the wearing away of the softer deposits. The Sabkah is bounded on the east by Wady Tufeileh, one of the principal drains of the Arabah, and containing a brackish, perennial stream.
Such are the great southern shores of the Dead Sea. The great valley is here narrower than at the northern shore, not because of any contraction in the mountain ranges, but arising from the ridge of Usdum, which was evidently thrown up from the bottom of the valley at some period subsequent to the formation of the Arabah. The projecting base of Jebel Usdum on the west, and the high fertile region of Es-Safieh on the east, contract the southern end of the lake into the form of a semicircular bay about six miles in diameter. A few miles farther north the shores on each side expand so much that the breadth of the sea is almost doubled. The general aspect of the shores is dreary and desolate in the extreme. The salt- incrusted plain, the white downs of the Arabah, the naked line of salt hills, the bare and scathed mountain ranges on each side, all blazing under the rays of a vertical sun, form a picture of utter and stern desolation such as the mind can scarcely conceive.
The Peninsula of el-Lisan, "the Tongue" SEE BAY, is the most remarkable feature on the eastern shore. It juts out opposite the great ravine of Kerak. The neck connecting it with the mainland is a strip of low, bare sand, measuring five miles across. In outline the peninsula bears some resemblance to the human foot, the toe projecting northward and forming a sharp promontory. Its length is about nine miles, and from the heel or southwestern point to the southern shoreline is seven miles. The main body is a Post-tertiary deposit composed of layers of marl, gypsum, and sandy conglomerate, manifestly coeval with the great diluvial terrace, and corresponding with it in elevation. The top is a table land, broad towards the south, but gradually narrowing to a serried ridge at the northern end. It is white and almost entirely destitute of vegetation. The surface is all rent and torn by torrent beds; and the sides are worn away into pyramidal masses resembling lines and groups of white tents. It is worthy of special note that in the wadys and along the shores pieces of sulphur, bitumen, rock salt, and pumice stone are found in great profusion. Probably, if examined with care, geological phenomena similar to those in Wady Mahawat might be found on this peninsula, and some additional light thus thrown upon the destruction of the cities of the plain. Poole says "the soil appeared sulphurous" (Journal R.G.S. 26, 62-64).
The shore of the Dead Sea between the peninsula and the northeastern angle has never been thoroughly explored. Seetzen, Irby and Mangles, De Saulcy, and more recently the party of the Duc de Luynes, visited a few places; and Lieut. Lynch and his officers touched at several points. A few miles north of el-Lisan the fertile plain called Ghor el-Mezra'ah terminates, and the mountains descend in sublime cliffs of red sandstone almost to the water's edge. Higher up, white, calcareous limestone appears, and forms at this place the main body of the range. Basalt also appears in places, sometimes overlying the limestone as on the plain of Bashan, at others bursting through the sandstone strata in dikes and veins. The ravines of Mojib (Arnon) and Zerka Ma'in appear like huge rents in the mountains. Near the mouth of the latter veins of gray and black trap cut through the sandstone, and a copious fountain of hot, sulphurous water sends a steaming river into the sea amid thickets of palms and tamarisks. This is Callirrhoe, so celebrated in olden time for its baths. Between this point and the plain of the Jordan volcanic eruptions have produced immense flows of basaltic rock, portions of which had been overflowed into the valley of the Jordan. Among other smaller basaltic streams three were found bordering on the eastern edge of the Dead Sea to the south of the little plain of Zarah (M. Lartet's paper to French Academy of Sciences; see in Journal of Sac. Lit. July, 1865, p. 496). 2ff7e9595c
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