ios - 以编程方式从 iPhone/iPad 连接到采集单元(WIFI 设备)
<p><p>我有一个硬件设备采集单元。该设备本身充当wifi路由器，它将发送数据。我想从 iPhone/iPad 连接它。</p>
<p>我听说使用 IP 地址和端口号我们可以使用套接字编程连接到 wifi 路由器。但是我不知道这个socket程序使用IP地址和端口号连接到wifi。</p>
<p>为此，我尝试使用以下代码获取连接的 wifi 路由器的 IP 地址。</p>
<pre><code>NSString *address = @"error";
struct ifaddrs *interfaces = NULL;
struct ifaddrs *temp_addr = NULL;
int success = 0;
// retrieve the current interfaces - returns 0 on success
success = getifaddrs(&interfaces);
if (success == 0) {
// Loop through linked list of interfaces
temp_addr = interfaces;
while(temp_addr != NULL) {
if(temp_addr->ifa_addr->sa_family == AF_INET) {
// Check if interface is en0 which is the wifi connection on the iPhone
if([ isEqualToString:@"en0"]) {
// Get NSString from C String
address = ;
}
}
temp_addr = temp_addr->ifa_next;
}
}
// Free memory
freeifaddrs(interfaces);
return address;
</code></pre>
<p>如果可以使用 ip 地址和端口号连接到 wifi 路由器，请你帮我一些代码或想法。</p>
<p>请帮帮我..</p>
<p>谢谢</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>您粘贴的代码基本上返回设备自己的IP地址，这根本没有帮助，除非您想猜测路由器的IP。您实际上可以获得正确的路由器IP地址，请参阅以下问题:</p>
<ul>
<li> <a href="https://stackoverflow.com/questions/2113580/objective-c-how-to-fetch-the-router-address" rel="noreferrer noopener nofollow">Objective-C : How to fetch the router address?</a> </li>
<li> <a href="https://stackoverflow.com/questions/24887904/how-to-get-wi-fi-router-ip-address-on-ios" rel="noreferrer noopener nofollow">How to get Wi-Fi router IP address on iOS?</a> </li>
<li> <a href="https://stackoverflow.com/questions/16470615/is-it-possible-to-get-the-ssid-mac-address-of-currently-connected-wifi-network" rel="noreferrer noopener nofollow">Is it possible to get the SSID & MAC Address of Currently connected WiFi Network in an App</a> </li>
</ul>
<p>有了这个之后，你就可以通过普通的 TCP/IP 连接套接字轻松地连接到它，更多信息请参见以下链接:</p>
<ul>
<li> <a href="https://stackoverflow.com/questions/18170620/socket-connection-in-ios" rel="noreferrer noopener nofollow">Socket Connection in IOS</a> </li>
<li> <a href="http://www.raywenderlich.com/3932/networking-tutorial-for-ios-how-to-create-a-socket-based-iphone-app-and-server" rel="noreferrer noopener nofollow">http://www.raywenderlich.com/3932/networking-tutorial-for-ios-how-to-create-a-socket-based-iphone-app-and-server</a> </li>
<li> <a href="https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/NetworkingTopics/Articles/UsingSocketsandSocketStreams.html" rel="noreferrer noopener nofollow">https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/NetworkingTopics/Articles/UsingSocketsandSocketStreams.html</a> </li>
<li> <a href="https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/Streams/Articles/NetworkStreams.html" rel="noreferrer noopener nofollow">https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/Streams/Articles/NetworkStreams.html</a> </li>
</ul>
<p>或者为了让您更轻松，有几个社区库可以让连接到服务器变得轻而易举:</p>
<ul>
<li> <a href="https://github.com/pkyeck/socket.IO-objc" rel="noreferrer noopener nofollow">https://github.com/pkyeck/socket.IO-objc</a> </li>
<li> <a href="https://github.com/dreese/FastSocket" rel="noreferrer noopener nofollow">https://github.com/dreese/FastSocket</a> </li>
</ul>
<p><em>我的建议是先通读这些文档，这样你才能了解 iOS/OS X 中的网络基础知识(在这方面实际上与 Unix 非常相似)。尝试库和包装器后，您可以在 <a href="http://cocoapods.org" rel="noreferrer noopener nofollow">CocoaPods</a> 上找到和 <a href="https://github.com" rel="noreferrer noopener nofollow">GitHub</a> .如果您当时因某些特定问题而受阻，我们或许可以为您提供帮助。我们无法为您完成所有工作。</em></p>
<p><strong>所以回答:是的，有可能。</strong></p></p>
<p style="font-size: 20px;">关于ios - 以编程方式从 iPhone/iPad 连接到采集单元(WIFI 设备)，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/26864578/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/26864578/
</a>
</p>
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