Ethereum IOS

1. Ethereum also uses blockchain technology, but it is more convenient to use than bitcoin's blockchain Turing, which is complete and open source. Anyone can create their own application on the basis of Ethereum

2. Eth interface refers to the interface, is the most widely used LAN communication mode, but also a protocol. Ethernet interface is the port of network data connection
each version of Ethernet has a maximum cable length limit (that is, the length without amplification). Signals within this range can propagate normally, and signals beyond this range cannot propagate
in order to allow the construction of a larger network, repeaters can be used to connect multiple cables. Repeater is a physical layer device, which can receive, amplify and retransmit signals in two directions
extended data
several common Ethernet interface types
1. SC optical fiber interface
SC optical fiber interface has been applied in the era of 100base TX Ethernet, so it was called 100base FX at that time (F is the abbreviation of optical fiber). However, at that time, because the performance was not more prominent than twisted pair, but the cost was higher, so it was not popularized. Now the instry vigorously promotes gigabit network, and SC optical fiber interface is re valued
2. RJ-45 interface
this kind of interface is the most common network equipment interface, commonly known as "crystal head", and the professional term is RJ-45 connector, which belongs to the type of twisted pair Ethernet interface. RJ-45 plug can only be inserted along the fixed direction, and a plastic spring piece is set to be stuck with RJ-45 slot to prevent it from falling off
3. FDDI interface
FDDI has the highest transmission rate among the mature LAN technologies. It has the characteristics of timed token protocol, supports a variety of topologies, and its transmission medium is optical fiber. Fiber distributed data interface (FDDI) is a set of protocols developed by American National Organization for Standardization (ANSI) to transmit digital signals on optical cables
reference source: Network Ethernet interface

3. Ethereum focuses on smart contract and Turing. EOS is based on blockchain operating system. Ethereum and EOS are two top blockchains. At present, there are bottlenecks in blockchain technology and narrow application fields.? LF cluster + cloud server is the most advanced blockchain 3.0 at present. Focusing on different blockchain projects such as public chain, storage chain, Im chain, asset chain and application chain, the advantage lies in resource isolation: each smart contract has its own blockchain, and the governance and development of proxy voting system of token holders has the most development prospect.

4. This is virtual currency. It's too risky. You'd better not play it

5. World of Warcraft mining skills level 1-375 alliance tribe complete upgrade route strategy

1-75: copper ore (smelting experience, can dig 1-4 times) is associated with poor quality stone and malachite
it's easy to dig in the birthplace, plus smelting experience, 50 + mining experience can be easily achieved

75-125: tin ore (smelting experience, can dig 1-4 times) 50 skill requirements, associated with tiger eye stone, shadow stone, rough stone
tin mine is also a very popular mineral. It is recommended by tribes to go to barren land / coniferous forest; The League recommends Chiji mountain

silver ore (smelting experience, can dig 1-4 times) 75 skill requirements, associated with tiger eye stone, rough stone
silver mine is the first rare mine we can encounter. Copper mine generates silver. That is to say, after a certain copper mine is collected, there is a certain chance to refresh silver mine next time. Of course, silver mine is also used as an independent refresh in advanced map. The tribe here recommends barren land / thousand needle stone forest; The League recommends Chiji mountain

125-175: iron ore (can be excavated 1-4 times) 125 skill requirements, accompanied by heavy stones and topaz
there are many places, but none of them is relatively distributed. However, I still suggest to go to the shining plain at the edge of the thousand needle Stone Forest - & gt; Tanalis, there's a lot of data going back and forth on this line

gold mine (smelting experience, 1-4 times of excavation) 155 skill requirements, accompanied by heavy stones and topaz
this is the second kind of rare ore that we can meet, and the last kind of ore with experience in smelting. Iron generates gold. Similarly, after the iron ore is collected, the next refresh will have a certain chance to refresh gold. Of course, the advanced map will refresh, but it is rare

175-245 mitag mine (can be excavated 1-4 times) 175 skill requirements, accompanied by solid stone, turquoise and ruby
two places are recommended for large-scale collection:
1. Barren land, as shown in Figure 1, will brush three secret silver in area a and two secret silver in area B. the refresh of these two places is very fast, and a circle of maps outside can't be finished, so areas a and B will refresh
2. If you think that there are too many people in the barren land, I recommend a small place, the altrank mountains, as shown in Figure 2. In the cave of area a, 2-3 secret silver will be refreshed each time, and in the refresh point outside, 3 mines will be brushed each time. This place has few people, and the map is small, and the refresh is relatively fast, which is suitable for a large number of collection
300-330, mainly to dig the magic iron ore

first of all, dig many magic iron ores distributed on Hellfire Peninsula clockwise

If Hellfire Peninsula is full of miners, go to ZANZA swamp

330-355, mainly for Moxian iron mine and Jiangang iron mine<

going to nagland grassland and digging hard steel ore can not only improve skills, but also sell ore at a good price

at the same time of digging hard steel ore, magic iron ore can also be collected together, even in the later stage, the consumption of magic iron ingot is still considerable

355-375, mainly for Moxian iron mine and Jiangang iron mine

yingyue gorge is the best choice for mining Jiangang mine

if the level is not enough, you can also choose to practice mining skills in the tiroka forest

don't forget to continue to search for magic iron ore while digging hard steel ore in yingyue canyon<

world of Warcraft mineral distribution

black coast: copper, tin, silver
damolo: Copper
lota: Copper
lockmodan: copper, tin
mogaorei: Copper
wetland: copper, tin, silver, iron
barren land: copper, tin, silver Iron ore
Irvine forest: Copper Mine
shizha mountain: copper mine, tin mine, silver mine, iron mine, Mithril
western wilderness: copper mine, tin mine, silver mine
ash Valley: copper mine, tin mine, silver mine, iron mine
Chiji mountain: copper mine, tin mine
thousand needle Stone Forest: copper mine, tin mine, silver mine, iron mine, Mithril
Twilight forest: copper mine, tin mine, iron mine Gold mine
desolate land: copper mine, tin mine, silver mine, iron mine, Mitsui, gold mine
tirisfalin: Copper Mine
st mud swamp: copper mine, tin mine, iron mine, gold mine, Mitsui
Yinsong forest: copper mine, tin mine, silver mine
tanalis: Iron Mine, gold mine, Mitsui, true silver, silver
Hillsbrad hills: copper mine, tin mine, silver mine Iron ore
Filas: iron ore, gold ore, Mithril, true silver, silver ore
altrank Mountains: copper ore, tin ore, iron ore, gold ore, silver ore
Isala: gold ore, Mithril, true silver, silver ore, silver ore
Arashi highland: tin ore, silver ore, iron ore, silver ore
fewood forest: gold ore, Mithril, true silver, silver ore
thorn Valley: tin ore, silver ore Iron ore, gold ore, Mitsui, true silver
angoro crater: gold ore, Mitsui, true silver, Se silver, Fu silver
barren land: silver ore, iron ore, gold ore, Mitsui, true silver
sirisus: Mitsui, true silver, Se silver, Fu silver
sad swamp: iron ore, Mitsui
Dongquan Valley: gold ore, Mitsui, true silver, Se silver Fuser silver
scorching gorge: iron ore, Mithril, Mithril, black iron
tedasher: there are no ore occurrences at present
singland: silver ore, iron ore, gold ore, Mithril, true silver, sethril
moonlight woodland: there are no ore occurrences at present
land of curse: gold ore, Mithril, true silver, sethril
Burning Plain: gold ore, Mithril, true silver, black iron, sethril Fuseyin
West plague land: gold mine, secret silver, true silver, Se silver, fuseyin
East plague land: gold mine, secret silver, true silver, Se silver Fuser silver

after 375
375-400
cobalt ore: howling wind fjord Grizzly Bear Hill Northwind tundra keel wilderness
400-430
saloon ore: gudake sulasa basin
430-450
Titan ingot: Storm cliff ice cap glacier

6. 客户端代码是这样的
#import "ViewController.h"
@implementation ViewController
-(void)aaa:(UIButton *)btn
{
NSString *method=[NSString stringWithFormat:@"login"];
NSString *username=[NSString stringWithFormat:@"123"];
笭肠蒂段郦灯垫犬叮华 NSString *password=[NSString stringWithFormat:@"123"];
NSString *urlString= [NSString stringWithFormat:@"",@"method=",method,@"username=",username,@"password=",password];

ASIFormDataRequest *requestForm = [[ASIFormDataRequest alloc] initWithURL:[NSURL URLWithString:urlString]];
//设置需要POST的数据，这里提交两个数据，A=a&B=b
//[requestForm setPostValue:@"a" forKey:@"A"];
//[requestForm setPostValue:@"b" forKey:@"B"];
[requestForm startSynchronous];

//输入返回的信息
NSLog(@"response\n%@",[requestForm responseString]);
[requestForm release];
}
- (void)viewDidLoad
{
[super viewDidLoad];
button1=[[UIButton alloc]initWithFrame:CGRectMake(200, 200, 50, 50)];
button1.backgroundColor=[UIColor redColor];
[self.view addSubview:button1];
[button1 addTarget:self action:@selector(aaa:) forControlEvents:UIControlEventTouchUpInside];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL):(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != );
}
@end
客户端想要访问服务器
必须加上服务器的ip 服务端我是这样实现的
服务器是用java开发的
public
void doLogin(HttpServletRequest request,HttpServletResponse response) throws
IOException{
String
username=request.getParameter("username");
String
password=request.getParameter("password");
String
getStr=request.getParameter("A");
System.out.println("用户名:"+username+
"密码:"+password);
getAddr(request);
PrintWriter
out=response.getWriter();
String msg=null;
if(username!=null&&username.equals("123")&&password!=null
&&password.equals("123")&&
getStr!=null&&getStr.equals("a")){
msg="登陆成功";
}
else
{
msg="登陆失败";
}

out.print(msg);
out.flush();
out.close();
}

7. At present, Iost has officially become the top 4 DAPP public chain platform outside eth, EOS and TRX, and the daily transaction number of Iost main network has exceeded that of Ethereum, ranking third in the world. In the future, Iost will build the world's first blockchain project based on capacity expansion and build the world's largest decentralized system.

8. Eth generally follows the price trend of bitcoin. Comparing the betas of the rise and fall of eth, we can see that for most of the past 18 months, the volatility of eth when the price of BTC falls is greater than that when the price of BTC rises. However, we are beginning to see the beta increase when eth rises. Considering the high internal correlation of cryptocurrency, we can make a prediction that at least in the short term, if the market rebounds, ETH's rebound is likely to exceed that of BTC.

9. In the main chain, Iost has officially become the top 4 DAPP public chain platform outside eth, EOS and TRX, and the daily transaction number of Iost main network has exceeded that of Ethereum, ranking third in the world. In the future, Iost will build the world's first blockchain project based on capacity expansion and build the world's largest decentralized system.