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28 package org.apache.hc.client5.http.protocol;
29
30 import java.io.IOException;
31 import java.util.Collection;
32
33 import org.apache.hc.core5.annotation.Contract;
34 import org.apache.hc.core5.annotation.ThreadingBehavior;
35 import org.apache.hc.core5.http.EntityDetails;
36 import org.apache.hc.core5.http.Header;
37 import org.apache.hc.core5.http.HttpException;
38 import org.apache.hc.core5.http.HttpRequest;
39 import org.apache.hc.core5.http.HttpRequestInterceptor;
40 import org.apache.hc.core5.http.protocol.HttpContext;
41 import org.apache.hc.core5.util.Args;
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48 @Contract(threading = ThreadingBehavior.STATELESS)
49 public class RequestDefaultHeaders implements HttpRequestInterceptor {
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51 private final Collection<? extends Header> defaultHeaders;
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56 public RequestDefaultHeaders(final Collection<? extends Header> defaultHeaders) {
57 super();
58 this.defaultHeaders = defaultHeaders;
59 }
60
61 public RequestDefaultHeaders() {
62 this(null);
63 }
64
65 @Override
66 public void process(final HttpRequest request, final EntityDetails entity, final HttpContext context)
67 throws HttpException, IOException {
68 Args.notNull(request, "HTTP request");
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70 final String method = request.getMethod();
71 if (method.equalsIgnoreCase("CONNECT")) {
72 return;
73 }
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75 if (this.defaultHeaders != null) {
76 for (final Header defHeader : this.defaultHeaders) {
77 if(!request.containsHeader(defHeader.getName())) {
78 request.addHeader(defHeader);
79 }
80 }
81 }
82 }
83
84 }