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BLE（二）信道&数据包&协议栈格式 - 创客硬件开发 - 清泛IT社区，...
文章源自：https://www.gandalf.site/2018/11/ble_23.html
参考低功耗蓝牙（BLE）安全初探
0x1 信道BLE的物理通道即“频道，分别是‘f=2402+k*2 MHz, k=0, … ,39’，带宽为2MHz”的40个RF Channel。
其中，有3个信道是advertising channel（广播通道）...
Can Json.NET serialize / deserialize to / from a stream?
...JSON so the client could send {"sign in":{"username":"nick"}}{"buy item":{"_id":"32321123"}} and it needs to see this as two fragments of JSON signaling an event each time it reads a fragment. In nodejs this can be done in 3 lines of code.
– Nick Sotiros
Jun 2...
Is there a method to generate a UUID with go language
...
"crypto/rand"
"fmt"
)
// Note - NOT RFC4122 compliant
func pseudo_uuid() (uuid string) {
b := make([]byte, 16)
_, err := rand.Read(b)
if err != nil {
fmt.Println("Error: ", err)
return
}
uuid = fmt.Sprintf("%X-%X-%X-%X-%X", b[0:4], b[4:6], b[6:8], b[8:...
PHP validation/regex for URL
...lieve I've run into issues, but I'm sure it's not exhaustive:
$text = preg_replace(
'#((https?|ftp)://(\S*?\.\S*?))([\s)\[\]{},;"\':<]|\.\s|$)#i',
"'<a href=\"$1\" target=\"_blank\">$3</a>$4'",
$text
);
Most of the random junk at the end is to deal with situations like http:/...
What is the purpose of XORing a register with itself? [duplicate]
...
@Gunslinger_ Writing shellcode 101 :)
– smassey
Aug 23 '13 at 11:49
...
OpenJDK availability for Windows OS [closed]
...ilds github project.
Update: OpenJDK 8 and 11 LTS binaries for Windows x86_64 can be found in ojdkbuild github project.
Disclaimer: I've built them myself.
Update (2019): OpenJDK Updates Project Builds for 8 and 11 are available now.
...
How do I sort strings alphabetically while accounting for value when a string is numeric?
... bool IsNumeric(string value)
{
return int.TryParse(value, out _);
}
/// <inheritdoc />
public int Compare(string s1, string s2)
{
const int S1GreaterThanS2 = 1;
const int S2GreaterThanS1 = -1;
var IsNumeric1 = IsNumeric(s1);
var Is...
How to pass prepareForSegue: an object
...is the same as this line
if ([[segue identifier] isEqualToString:@"YOUR_SEGUE_NAME_HERE"])
{
// Get reference to the destination view controller
YourViewController *vc = [segue destinationViewController];
// Pass any objects to the view controller here, like...
...
How to detect the current OS from Gradle
...defs.condition.Os
task checkWin() << {
if (Os.isFamily(Os.FAMILY_WINDOWS)) {
println "*** Windows "
}
}
I found this in the following Gradle branch, and it seems to work nicely. gradle/gradle-core/branches/RB-0.3/build.gradle
...
How do I check CPU and Memory Usage in Java?
...first line)
For more info see: http://java.sun.com/docs/hotspot/gc5.0/gc_tuning_5.html
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