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java.net.ConnectException: Connection refused

... This exception means that there is no service listening on the IP/port you are trying to connect to: You are trying to connect to the wrong IP/Host or port. You have not started your server. Your server is not listening for connections. On Windows servers, the listen backlog queue is f...
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Checking network connection

...or as err: return False Currently, 216.58.192.142 is one of the IP addresses for google.com. Change http://216.58.192.142 to whatever site can be expected to respond quickly. This fixed IP will not map to google.com forever. So this code is not robust -- it will need constant maintenanc...
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Linux command to translate DomainName to IP [closed]

Is there any Linux command to translate domain name to IP? 2 Answers 2 ...
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std::string的截取字符串的方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

std::string的截取字符串的方法例如截取ip:port,代码如下:std::string ip("127.0.0.1:8888");int index = ip.find_last_of(':'); ipip.substr(0, index)....例如截取ip:port,代码如下: std::string ip("127.0.0.1:8888"); int index = ip.find_last_of(':'); //ip ip.substr(0, in...
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What do people find difficult about C pointers? [closed]

...started working with them, the biggest problem I had was the syntax. int* ip; int * ip; int *ip; are all the same. but: int* ip1, ip2; //second one isn't a pointer! int *ip1, *ip2; Why? because the "pointer" part of the declaration belongs to the variable, and not the type. And then derefe...
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Possible reasons for timeout when trying to access EC2 instance

...he same problem, and the solution ended up being adding my local machine's IP to the list of inbound rules in the active security group. In the inbound dialog below, enter 22 in the port range, your local IP/32 in the source field, and leave 'custom tcp rule' in the dropdown. ...
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How can I list ALL DNS records?

... Oct 11 '13 at 18:30 denis phillipsdenis phillips 11.7k55 gold badges3030 silver badges4747 bronze badges ...
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Binding IIS Express to an IP Address [duplicate]

...twork. Out of the box it can do localhost but I am trying to bind it to an IP address. 5 Answers ...
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Connect Device to Mac localhost Server? [closed]

How do I allow any device, e.g., iPhone, to connect over a WLAN to my Mac's localhost server? 14 Answers ...
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How can i use iptables on centos 7? [closed]

...am trying to open 80 port for httpd service, but something wrong with my iptables service ... what's wrong with it? What am I doing wrong? ...