1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28 package org.apache.hc.core5.http.protocol;
29
30 import java.io.IOException;
31
32 import org.apache.hc.core5.annotation.Contract;
33 import org.apache.hc.core5.annotation.ThreadingBehavior;
34 import org.apache.hc.core5.http.EntityDetails;
35 import org.apache.hc.core5.http.HttpException;
36 import org.apache.hc.core5.http.HttpHeaders;
37 import org.apache.hc.core5.http.HttpRequest;
38 import org.apache.hc.core5.http.HttpRequestInterceptor;
39 import org.apache.hc.core5.http.HttpVersion;
40 import org.apache.hc.core5.http.Method;
41 import org.apache.hc.core5.http.ProtocolException;
42 import org.apache.hc.core5.http.ProtocolVersion;
43 import org.apache.hc.core5.net.URIAuthority;
44 import org.apache.hc.core5.util.Args;
45
46
47
48
49
50
51
52
53
54
55 @Contract(threading = ThreadingBehavior.IMMUTABLE)
56 public class RequestTargetHost implements HttpRequestInterceptor {
57
58
59
60
61
62 public static final HttpRequestInterceptor INSTANCE = new RequestTargetHost();
63
64 public RequestTargetHost() {
65 super();
66 }
67
68 @SuppressWarnings("deprecation")
69 @Override
70 public void process(final HttpRequest request, final EntityDetails entity, final HttpContext context)
71 throws HttpException, IOException {
72 Args.notNull(request, "HTTP request");
73 Args.notNull(context, "HTTP context");
74
75 final ProtocolVersion ver = context.getProtocolVersion();
76 final String method = request.getMethod();
77 if (Method.CONNECT.isSame(method) && ver.lessEquals(HttpVersion.HTTP_1_0)) {
78 return;
79 }
80
81 if (!request.containsHeader(HttpHeaders.HOST)) {
82 URIAuthority authority = request.getAuthority();
83 if (authority == null) {
84 if (ver.lessEquals(HttpVersion.HTTP_1_0)) {
85 return;
86 }
87 throw new ProtocolException("Target host is unknown");
88 }
89 if (authority.getUserInfo() != null) {
90 authority = new URIAuthority(authority.getHostName(), authority.getPort());
91 }
92 request.addHeader(HttpHeaders.HOST, authority);
93 }
94 }
95
96 }