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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.Method;
41 import org.apache.hc.core5.http.protocol.HttpContext;
42 import org.apache.hc.core5.util.Args;
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49 @Contract(threading = ThreadingBehavior.STATELESS)
50 public class RequestDefaultHeaders implements HttpRequestInterceptor {
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52 private final Collection<? extends Header> defaultHeaders;
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57 public RequestDefaultHeaders(final Collection<? extends Header> defaultHeaders) {
58 super();
59 this.defaultHeaders = defaultHeaders;
60 }
61
62 public RequestDefaultHeaders() {
63 this(null);
64 }
65
66 @Override
67 public void process(final HttpRequest request, final EntityDetails entity, final HttpContext context)
68 throws HttpException, IOException {
69 Args.notNull(request, "HTTP request");
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71 final String method = request.getMethod();
72 if (Method.CONNECT.isSame(method)) {
73 return;
74 }
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76 if (this.defaultHeaders != null) {
77 for (final Header defHeader : this.defaultHeaders) {
78 if(!request.containsHeader(defHeader.getName())) {
79 request.addHeader(defHeader);
80 }
81 }
82 }
83 }
84
85 }