Send an HTTP request through a specific network interface using Spring RestTemplate





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I am using Spring RestTemplate and I need to force my client to send an HTTP request through a specific network interface.



I already found a solution using java socket: 



NetworkInterface nif = NetworkInterface.getByName("wlan0");

Enumeration<InetAddress> nifAddresses = nif.getInetAddresses();

Socket s = new Socket();

s.bind(new InetSocketAddress(nifAddresses.nextElement(), 0));

s.connect(new InetSocketAddress(host, port));

// Instantiates a new PrintWriter passing in the sockets output stream

PrintWriter wtr = new PrintWriter(s.getOutputStream());

// Prints the request string to the output stream

wtr.println("GET "+path+" HTTP/1.1");

wtr.println("Host: "+host);

wtr.println("");

wtr.flush();

BufferedReader br = new BufferedReader(new 

InputStreamReader(s.getInputStream()));

String content = "";

while ((content=br.readLine()) != null) 

     {

         System.out.println(content);       

     }


is there any way to reproduce this solution using Spring RestTemplate?






java spring-web







share|improve this question





























    1















    I am using Spring RestTemplate and I need to force my client to send an HTTP request through a specific network interface.



    I already found a solution using java socket: 



    NetworkInterface nif = NetworkInterface.getByName("wlan0");
    
Enumeration<InetAddress> nifAddresses = nif.getInetAddresses();
    
Socket s = new Socket();
    
s.bind(new InetSocketAddress(nifAddresses.nextElement(), 0));
    
s.connect(new InetSocketAddress(host, port));
    
// Instantiates a new PrintWriter passing in the sockets output stream
    
PrintWriter wtr = new PrintWriter(s.getOutputStream());
    
// Prints the request string to the output stream
    
wtr.println("GET "+path+" HTTP/1.1");
    
wtr.println("Host: "+host);
    
wtr.println("");
    
wtr.flush();
    
BufferedReader br = new BufferedReader(new 
    
InputStreamReader(s.getInputStream()));
    
String content = "";
    
while ((content=br.readLine()) != null) 
    
     {
    
         System.out.println(content);       
    
     }


    is there any way to reproduce this solution using Spring RestTemplate?






    java spring-web







    share|improve this question

























      1












      1








      1








      I am using Spring RestTemplate and I need to force my client to send an HTTP request through a specific network interface.



      I already found a solution using java socket: 



      NetworkInterface nif = NetworkInterface.getByName("wlan0");
      
Enumeration<InetAddress> nifAddresses = nif.getInetAddresses();
      
Socket s = new Socket();
      
s.bind(new InetSocketAddress(nifAddresses.nextElement(), 0));
      
s.connect(new InetSocketAddress(host, port));
      
// Instantiates a new PrintWriter passing in the sockets output stream
      
PrintWriter wtr = new PrintWriter(s.getOutputStream());
      
// Prints the request string to the output stream
      
wtr.println("GET "+path+" HTTP/1.1");
      
wtr.println("Host: "+host);
      
wtr.println("");
      
wtr.flush();
      
BufferedReader br = new BufferedReader(new 
      
InputStreamReader(s.getInputStream()));
      
String content = "";
      
while ((content=br.readLine()) != null) 
      
     {
      
         System.out.println(content);       
      
     }


      is there any way to reproduce this solution using Spring RestTemplate?






      java spring-web







      share|improve this question














      I am using Spring RestTemplate and I need to force my client to send an HTTP request through a specific network interface.



      I already found a solution using java socket: 



      NetworkInterface nif = NetworkInterface.getByName("wlan0");
      
Enumeration<InetAddress> nifAddresses = nif.getInetAddresses();
      
Socket s = new Socket();
      
s.bind(new InetSocketAddress(nifAddresses.nextElement(), 0));
      
s.connect(new InetSocketAddress(host, port));
      
// Instantiates a new PrintWriter passing in the sockets output stream
      
PrintWriter wtr = new PrintWriter(s.getOutputStream());
      
// Prints the request string to the output stream
      
wtr.println("GET "+path+" HTTP/1.1");
      
wtr.println("Host: "+host);
      
wtr.println("");
      
wtr.flush();
      
BufferedReader br = new BufferedReader(new 
      
InputStreamReader(s.getInputStream()));
      
String content = "";
      
while ((content=br.readLine()) != null) 
      
     {
      
         System.out.println(content);       
      
     }


      is there any way to reproduce this solution using Spring RestTemplate?






      java spring-web




      java spring-web






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Jan 3 at 10:52









      Zak FSTZak FST

      286




      286
























          1 Answer
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          you need to configure the http client which is used by resttemplate



          private ClientHttpRequestFactory getClientHttpRequestFactory() {
          
NetworkInterface nif = NetworkInterface.getByName("sup0");
          
Enumeration<InetAddress> nifAddresses = nif.getInetAddresses();
          
RequestConfig config = RequestConfig.custom()
          
        .setLocalAddress(nifAddresses.nextElement()).build();
          

          
CloseableHttpClient client = HttpClientBuilder
          
  .create()
          
  .setDefaultRequestConfig(config)
          
  .build();
          
return new HttpComponentsClientHttpRequestFactory(client);


          }



          and then...



          RestTemplate restTemplate = new RestTemplate(getClientHttpRequestFactory());


          binding network interface to Apache httpclient






          share|improve this answer





















          • 1





            thanks, it works like a charm

            – Zak FST
            Jan 3 at 11:24












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          1 Answer
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          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

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          active

          oldest

          votes






          active

          oldest

          votes









          2














          you need to configure the http client which is used by resttemplate



          private ClientHttpRequestFactory getClientHttpRequestFactory() {
          
NetworkInterface nif = NetworkInterface.getByName("sup0");
          
Enumeration<InetAddress> nifAddresses = nif.getInetAddresses();
          
RequestConfig config = RequestConfig.custom()
          
        .setLocalAddress(nifAddresses.nextElement()).build();
          

          
CloseableHttpClient client = HttpClientBuilder
          
  .create()
          
  .setDefaultRequestConfig(config)
          
  .build();
          
return new HttpComponentsClientHttpRequestFactory(client);


          }



          and then...



          RestTemplate restTemplate = new RestTemplate(getClientHttpRequestFactory());


          binding network interface to Apache httpclient






          share|improve this answer





















          • 1





            thanks, it works like a charm

            – Zak FST
            Jan 3 at 11:24
















          2














          you need to configure the http client which is used by resttemplate



          private ClientHttpRequestFactory getClientHttpRequestFactory() {
          
NetworkInterface nif = NetworkInterface.getByName("sup0");
          
Enumeration<InetAddress> nifAddresses = nif.getInetAddresses();
          
RequestConfig config = RequestConfig.custom()
          
        .setLocalAddress(nifAddresses.nextElement()).build();
          

          
CloseableHttpClient client = HttpClientBuilder
          
  .create()
          
  .setDefaultRequestConfig(config)
          
  .build();
          
return new HttpComponentsClientHttpRequestFactory(client);


          }



          and then...



          RestTemplate restTemplate = new RestTemplate(getClientHttpRequestFactory());


          binding network interface to Apache httpclient






          share|improve this answer





















          • 1





            thanks, it works like a charm

            – Zak FST
            Jan 3 at 11:24














          2












          2








          2







          you need to configure the http client which is used by resttemplate



          private ClientHttpRequestFactory getClientHttpRequestFactory() {
          
NetworkInterface nif = NetworkInterface.getByName("sup0");
          
Enumeration<InetAddress> nifAddresses = nif.getInetAddresses();
          
RequestConfig config = RequestConfig.custom()
          
        .setLocalAddress(nifAddresses.nextElement()).build();
          

          
CloseableHttpClient client = HttpClientBuilder
          
  .create()
          
  .setDefaultRequestConfig(config)
          
  .build();
          
return new HttpComponentsClientHttpRequestFactory(client);


          }



          and then...



          RestTemplate restTemplate = new RestTemplate(getClientHttpRequestFactory());


          binding network interface to Apache httpclient






          share|improve this answer















          you need to configure the http client which is used by resttemplate



          private ClientHttpRequestFactory getClientHttpRequestFactory() {
          
NetworkInterface nif = NetworkInterface.getByName("sup0");
          
Enumeration<InetAddress> nifAddresses = nif.getInetAddresses();
          
RequestConfig config = RequestConfig.custom()
          
        .setLocalAddress(nifAddresses.nextElement()).build();
          

          
CloseableHttpClient client = HttpClientBuilder
          
  .create()
          
  .setDefaultRequestConfig(config)
          
  .build();
          
return new HttpComponentsClientHttpRequestFactory(client);


          }



          and then...



          RestTemplate restTemplate = new RestTemplate(getClientHttpRequestFactory());


          binding network interface to Apache httpclient







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Jan 3 at 11:11

























          answered Jan 3 at 11:03









          Marc StröbelMarc Ströbel

          362311




          362311








          • 1





            thanks, it works like a charm

            – Zak FST
            Jan 3 at 11:24














          • 1





            thanks, it works like a charm

            – Zak FST
            Jan 3 at 11:24








          1




          1





          thanks, it works like a charm

          – Zak FST
          Jan 3 at 11:24





          thanks, it works like a charm

          – Zak FST
          Jan 3 at 11:24




















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