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August 25, 2019, 09:01:04 AM
News: 2017-10-10 Heatledger 2.0 with Heatwallet 2.2.0 released! NOTE: Balance leasing and hard fork at block 777777 https://github.com/Heat-Ledger-Ltd/heatwallet/releases
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Author Topic: Core development update  (Read 536 times)

verymuchso wrote Core development update on December 01, 2017, 12:19:20 PM
The reason we needed the hard fork so badly was because of a bug.

It turned out through a not so obvious coding error that when you'd send HEAT to yourself it would incorrectly affect your forging stake. Not your spendable balance, only the amount of stake considered by the protocol.

What went wrong was that where a transaction comes in and is first processed two objects where instantiated, one for the sender account and one for the recipient account. These objects are passed on to lower level operations where depending on the transaction types these account objects are updated and these updates are recorded to a versioning mechanism.

What happened was that when the objects where first created some initial balance info was kept in object memory and when we first saved the sender object and later the recipient object, it turned out that updates to the first where not available to the second.

Solution was to check if sender and recipient are equal and simply instantiate a single object.

The fork was kindof difficult since we could not foresee if anyone would trigger this in between us releasing the update and the fork height. To deal with this at the fork height we had to make a scan of the blockchain (which luckily can do that in about a second) to search for offending transactions and correct the account stake for those accounts.

All in all the effect has been that just some of these payments have occurred and always with low amounts, the single large transfer was reported to us and we did the fork within the week.

-------------

Apart from this work has been progressing on finalizing the microservices, lets call it version 2. The main difference being that the usage has been greatly simplified, the api as published in heat-dev-kit will remain the same for the most part but some of the more difficult aspects are handled by the heat platform now and dont need any work on the part of the microservice author.

Its hard to describe this in a few words, but I'll try anyway..

Because of the nature of a decentralized consensus network, basically being decentralized, it can happen that the order of transactions differ at different points in the network. Since microservices are invoked through transactions a microservice had to be aware of this fact. Another aspect of a blockchain is that blocks get generated and accepted at some point, while at a later moment a better block could come along which required the old one to be undone and the new one to be applied, this also had to be handled by your microservice.

These two things are handled now by a transaction cache solution which is at the heat core, this cache ensures transactions are reported to your microservice only once and in case the order of transactions changes only the transaction that has shifted position is reported to your microservice.

The cache is also persisted to disk so that when you redownload the blockchain or rescan it, your microservices are not invoked again.

Off to slush now for the second day in a snowy Helsinki.

Stephenfluen wrote Wet really black pussy ??? on February 26, 2019, 05:33:49 PM
@Lelo_OfficialJanet looked at me, "So, what should we do?""Cum on your face?" I asked.I also got better about asking for her "help," which was a blowjob most of the time. Cassidy was VERY good at blowing me, and she loved hearing that she could take more of my dick in her mouth than any girl I had met before. She tried deep throating a couple more times, but she would quickly start gagging if my cock was in her throat too long. Still, her soft lips and slippery cheeks made me cum quickly every time. But I didn't ask to fuck her tits again, and I didn't ask to cum on her face. I could tell that she hadn't been thrilled when I asked to cum on her face the first time. Sometimes a hand job was good enough, and I really enjoyed watching her big, full tits sway back and forth as her hand pumped up and down my dick. But her blowjobs were so good, I mostly just asked for that."I'm serious, I'm going to cum," I replied, the familiar fire bubbling up inside my pleasure centers."Cassidy, I don't..." I began to say, but before I could finish I felt her soft fingers slowly closing over my thick cock.
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   “I...” She was panting, staring right into Elly's hypnotic eyes. She was immune to hypnosis, immune to all mind control, and yet... “I...”But then there was Kelly. John didn't just love his sister; he was in love with her. To him there was no more of a beautiful girl in the world, with maybe the exception of their mother, Karin. Kelly was 5'6" tall and tipped the scales at 120 lbs. She had long curly red hair that hung halfway down her back and bright green eyes. Her figure had really filled out in the last year, and he knew from going through her clothes that she wore a 36-C bra. Sometimes he could see her nipples sticking out from her t-shirt when she didn't wear a bra, like around the house."I know you do," Kelly said, hugging him. "That's why you're so perfect.""As soon as we get in the garage," Kelly said. "Just do it as fast as you can. If you hurry, mom won't notice. I've got to have a cock inside my pussy or I'll simply go crazy.""Oh, John, this is so exciting," Kelly said, squeezing her tits and pinching her nipples. "I want you to fuck me right now," she said, reaching out and grasping his already hard cock through his pants."Yeah, really," Kelly said, smiling at him. "You're huge.""I better check, anyway." He announced."I don't know..." I responded carefully again. "I'm not trying to get you worked up, I'm just saying that it seems like they have a solid case. I don't want you to be stunned or disappointed when it turns out that they really did have this fake class for athletes."

Stephenfluen wrote Nice negro fat ! on February 26, 2019, 05:37:05 PM
The next day, Cassidy didn't come out of her bedroom until almost two in the afternoon. I grew more and more nervous over the course of the day, wondering what she was going to say and if things were going to be really awkward between us. When she finally emerged, yawning and sleepy eyed, she barely acknowledged me as she headed straight for the kitchen and some food."Speaking of asking..." He leaned closer and pointed off to the left. "See the cute redhead in the black skirt?"Her tongue flicked across my ear. Gathering the last of my senses, I pulled away from her."You wouldn't mind?" John asked, surprised.Her hands explored me fervently, with her mouth following dutifully, until they came to a part of my body that had been silently screaming in want for what felt like as long as I could remember. First were her nails, a gentle trace of my lips’ peak, and finally the tips of her fingers sinking into my folds, revealing the moisture that had been created within them."Bimbo!" she squealed. She felt a supreme bliss fill her quieting mind as she said the word. She wanted to feel that again. "Bimbo! I'm your b-b-bimbo sluuuut wh-whore!" Oh, gods, how did this feel so good? How?
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   "Oh, Kent", she said in her husky Marilyn Monroe voice. "You're a naughty boy. You'll have to be punished later"."You're just suuuch a fun toy!" the redhead purred. "So horny. So needy. I think you're my new favorite, tickleslut!"I slung the towel over my shoulder and walked to the kitchen. It was a beautiful day outside. Partly cloudy, but the sun was shining on the snow-covered hills. The whole front part of the cabin was glass, affording an unlimited vista down the valley. It also occurred to me; the glass afforded an unlimited view into the entire cabin, save the bathroom when the door was closed. The windows in front were of the reflective coating type, looking like mirrors from outside, during the day. There were only three or four other structures in sight. All were similar to ours, being rather pricey looking mountain retreats. I had noticed light in a few of them last night, but none were actually close enough to really see well enough inside, except for the one directly across the only road leading up here. It was a light colored cedar cabin with large reflective bronze windows. In daylight I could only see the reflection of our side of the valley in them, including our cabin.I noticed Doug wasn't the only one watching us now. I saw several guys turned around at the bar staring. Doug was going to be getting any dirty, fucking thing he wanted from me for months to come for coming up with this idea! He was smiling as always. I saw him say something to one of the guys next to him, who glanced back at me and then slapped him on the shoulder. I had no issue with his bragging about me. Grabbing Becca's wrists, I gently eased her arms from around my waist and as I began to turn, told her, "Spin around for me.""Yeah listen, if you don't want to do it, I totally understand. But like I said, it's HUGE points. HUGE! And I thought, I'm not ugly. What guy wouldn't want to cum in a pretty girl's hair, especially if she was asking for him to, you know? And I don't mean to rush your decision, but we have two hours for this hunt. It's already been 30 minutes since it started, and I need to get back to the bar because there's other stuff we can do for points. So like... I just need to know if you'd be willing to do it."Speaking of licking lips, I was dying to get to hers. Standing up, I grabbed her hand. Urging her to her feet, I told her, "Lie on your back."When we first entered the club, Doug, who must have been as worked up as I was, suggested we try picking up a girl here rather than go home and look though the local personals or an escort service as we had in the past. At first I'd been skeptical. Yes, I understood his point about the added thrill and the air of risk it involved, but how the hell did we approach someone?Kent began pulling off his shirt. I thought Jan was going to get annoyed, which concerned me, because I really was enjoying this. Janet just grabbed the hem of her shirt, and in one swift move pulled it off over her head. She tossed the wet shirt to her husband, then unbuttoned her jeans and wriggled out of them. Not wanting to be different, I was soon in my underwear, too. Both women looked quite lovely by the bright glow thrown off by the fireplace. Like Anne, Jan's attire was damp, and her nipples were clearly visible through the bra. I could also make out the dark patch of fur through her wet panties. I grinned at my wife as we clustered around the small dinette table.

Stephenfluen wrote Amazing really black BBW ! on February 26, 2019, 05:38:37 PM
"What's that mean?" I asked.With urgency now, she met my mouth with a kiss that so devastated my senses, it took a full moment to realize I now found myself with my back against the shaggy carpet, and then her naked body enwrapping mine."My little Ia really proved me wrong," Mistress Elly hissed, as Ia cried out from the tickling on her thigh. It felt heavenly. It was horrible. "I thought I could break her, but look how strong she is! She's already held up ten minutes!""Your sister!" Tom exclaimed, his mouth opening in surprise. "How can she help?""Listen, I'm thinking of hopping in the shower...you, uh, wanna join me?" I said, eyeing her wonderful figure."Yes," Kelly said. "I think I want you to try your plan. But on one condition. You have to be available to me whenever I want, for whatever I want. Agreed?"
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   "I know you do," Kelly said, hugging him. "That's why you're so perfect."Anne, of course, had had at least a dozen orgasms since we changed positions. We were all momentarily exhausted from our pleasures. Panting heavily, and very thirsty, I staggered to my feet while the others remained tangled on the thick rug, which was damp and matted in several places. I knelt briefly, kissed my wife, then smooched Jan, and exchanged a "Fist Tap" with Kent, then rose and stumbled to the kitchen. Grabbing two huge glasses from the cupboard, I filled them with water from the pitcher in the refrigerator. I gulped a few swallows as I strolled back to the rug. I passed the glasses to the ladies, who gratefully accepted and drank thirstily."What's the matter?"He groaned and then John saw that he was cumming, filling Kelly's mouth for the second time that evening as she eagerly gulped the cum down. Kelly sucked and gulped until there was nothing left for her, then gently licked and sucked his cock clean before letting it drop limp from her mouth.While we were cleaning up, I could hear Anne's very loud cries of pleasure from the other room. Obviously, they were not making pancakes. I started towards the door to watch, but Janet pushed me back towards the shower, saying, "They left us alone, now go take your shower."Month? Ia struggled to keep her calm. Trys would save her. Someone would save her.They finished dinner and cleaned up, Jason bragging once more about how he had beat Tom at golf and at how well John had done too."Or if I knew some older guys that had more experience they could probably tell me how to do things that they like," Kelly went on.

Stephenfluen wrote Hot latinas BBW . on February 26, 2019, 05:55:22 PM
@Lelo_OfficialJenna pulled his jeans down over his hips and down to the floor and I licked my lips at the sight of Doug's long thick cock springing free."Yes, baby!" I called out. "Oh, fuck me!""OK, let's...Oh, look!" Anne pointed out the front window. A flashlight was moving down the driveway across the street. "They're coming."I followed the line of his finger and my eyes widened at the sight of a tall slender redhead. She was wearing a red sleeveless shirt that looked as if it could barely contain her breasts.I started to thank her, but all that came out was a loud moan. She ducked her head and her full, pink lips fastened themselves to my hard, rose-colored nipple. Jenna moaned around it as she began to suck it and her fingers stroked my other nipple. Doug was still fondling hers and leaning over I caught his lips and our tongues explored each other's mouths as Jenna worked my nipples. Doug broke the kiss and removing his hands from Jenna's tits, grabbed her shoulders and pulled her up from my breasts.
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   "I haven't even gotten this out yet!" Elly sang, and Ia heard her draw something out with her free hand. Ia's eyes opened unwillingly."Obviously!" she laughed again, her light, sweet laugh. "You're amazing at it. If I had known you were that good, I would have wanted us to do this a long time ago. Fuck, I came hard."Share"It was great!" Kelly responded. "I think we'll go to the movies more often. It's a nice way to spend an evening.""I know you're right, but I'd still rather stay here," Kelly said, getting to her feet. "Thank you and good-night," she said, wrapping her arms around him and kissing him, her tongue sliding into his mouth. "Ummm, you know how to kiss, too," she said, reluctantly letting her arms drop and getting up to leave the room."You'll be the first to know, sweetie!""Oh, fuck yeah!" Doug cried out."Hey, John, I've got some lumber I need to move that's too big for me to handle by myself. If you're interested in helping me, I'll give you a few dollars for your trouble."

Stephenfluen wrote Beatiful african BBW ! on February 26, 2019, 06:09:01 PM
"Good, I'm glad," she said as she stepped out of the tub. "A deal is a deal. But now I have to go clean myself up. Thanks for not getting cum on my jacket.""What if I could get Kelly to agree to have sex with you," he said, taking the plunge. "How would that make you feel?""Isn't it a school night?" he asked."Good," she said with a smile.Buford had been amused as well and had pulled out his own cell phone to take some pictures of Tiffany in her new trappings: "Say 'cheese'!""You have a talent," Cassidy told me afterwards, and she quickly pulled back on her sweat pants and headed for her room. "I'm so glad we made this deal."
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   Beating half limp meat is not a lot of fun, but I couldn't get myself to concentrate. And then I focused on what was really happening here. Beautiful Cassidy was asking me, even convincing me to cum in her hair. Cassidy, with the big, beautiful breasts and the tight little ass, NEEDED me to cum on her. Cassidy, with the pretty face, and full, soft lips, wanted ME to cum on her."Then cum on my face," Cassidy replied, her blue eyes moving up to meet mine. "Isn't that the point? Don't I look sexy for you dressed up like this? I'm on my knees for you, just waiting for your hot cum on my face."But we never talked about the UNC scandal. I felt a little bad at even making the bet, knowing that the evidence on the news seemed so strong and Cassidy was blinded by her loyalty to her school. I decided not to mention our bet or try to redeem the prize we had agreed upon.But Tuesday afternoon, when Cassidy got home from work, it was the first thing she mentioned when she walked in the door. Normally she got home before me, but that day I had changed out of work clothes and was drinking a beer while watching tv on the couch. The door had barely closed when she said, "Alright, you win. The stupid story about UNC allowing athletes to cheat was true.""Oh...oh!" Jenna kept moaning as her hips moved up and down into my busy fingers.It was almost a pleasure to eat her pussy. Cassidy had such a light, almost indistinguishable taste that I had to seek it out with the length of my exploring tongue. And after several licks and flicks of my tongue over her sex, by the time I had identified her essence, she was moaning near a scream. I looked up at her from between her smooth thighs, bore in with my tongue on her clit, and concentrated on rubbing and flicking her sensitive little nub."Yes, you most definitely do," John agreed, grinning at her.Maybe I'll hang with John today, tease him a little bit, and find out what he's been up to, she thought, reaching for a cut-off t-shirt and pulling it over her head. It barely came down enough to cover her tits, and her nipples pressed out against the material, making it very obvious that she had no bra on. She then reached for a pair of cut-offs, slipping into them without any underwear. She loved the feeling of the thick seam rubbing her clit as she moved her legs. She knew if she wasn't careful she'd wet the entire crotch.

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