source: cheroxy/trunk/src/CRXProxy.cpp

Last change on this file was 64, checked in by cheese, 11 years ago

#1 add response code handling on response code == 304 (not modified)
File size: 6.1 KB
Line 
1/**
2 * CRXProxy.cpp
3 */
4
5#include "CRXProxy.h"
6
7#include <string.h>
8
9CRXFilter CRXProxy::mFilter;
10
11CRXProxy::CRXProxy (const int aSocket)
12 : mServerTimeout (0)
13{
14 /*----------------------------------------------------------------*/
15 if (aSocket < 0)
16 return ;
17
18 mClient = aSocket;
19 /*----------------------------------------------------------------*/
20}
21
22CRXProxy::~CRXProxy (void)
23{
24 /*----------------------------------------------------------------*/
25 Close ();
26 /*----------------------------------------------------------------*/
27}
28
29void
30CRXProxy::SetServerTimeout (const int aTimeout)
31{
32 /*----------------------------------------------------------------*/
33 mServerTimeout = aTimeout;
34 /*----------------------------------------------------------------*/
35}
36
37void
38CRXProxy::Close (void)
39{
40 /*----------------------------------------------------------------*/
41 mServer.Close ();
42 mClient.Close ();
43 /*----------------------------------------------------------------*/
44}
45
46int
47CRXProxy::Forward (void)
48{
49 int aResult = 0;
50
51 /*----------------------------------------------------------------*/
52 aResult = ReceiveRequest ();
53 if (aResult < 0)
54 {
55 aResult = ERROR_PROXY_FAILED_TO_RECEIVE_REQUEST;
56 CRX_ERROR_SET (aResult, "Failed to receive from client.");
57 }
58
59 aResult = SendRequest ();
60 if (aResult < 0)
61 {
62 aResult = ERROR_PROXY_FAILED_TO_SEND_REQUEST;
63 CRX_ERROR_SET (aResult, "Failed to send to server.");
64 return aResult;
65 }
66
67 aResult = ReceiveResponse ();
68 if (aResult < 0)
69 {
70 aResult = ERROR_PROXY_FAILED_TO_RECEIVE_RESPONSE;
71 CRX_ERROR_SET (aResult, "Failed to receive from server.");
72 }
73
74 aResult = SendResponse ();
75 if (aResult < 0)
76 {
77 aResult = ERROR_PROXY_FAILED_TO_SEND_RESPONSE;
78 CRX_ERROR_SET (aResult, "Failed to send to client.");
79 return aResult;
80 }
81 /*----------------------------------------------------------------*/
82
83 return aResult;
84}
85
86int
87CRXProxy::ReceiveRequest (void)
88{
89 int aResult = 0;
90 char aBuffer;
91
92 std::string aHttpHeader;
93
94 /*----------------------------------------------------------------*/
95 for (;;)
96 {
97 aResult = mClient.Receive (&aBuffer, 1);
98 if (aResult == -1)
99 {
100 aResult = ERROR_PROXY_FAILED_TO_RECEIVE_REQUEST;
101 CRX_ADD_SUBCLASS_ERROR (mClient);
102 CRX_ERROR_SET (aResult, "Failed to receive from client.");
103 return aResult;
104 }
105 aHttpHeader += aBuffer;
106 if (aHttpHeader.rfind (CRLF2) != std::string::npos)
107 break;
108 }
109
110 mHttpRequest.SetHeader (aHttpHeader.c_str ());
111 /*----------------------------------------------------------------*/
112
113 return aResult < 0 ? aResult : 0;
114}
115
116int
117CRXProxy::SendRequest (void)
118{
119 int aResult = 0;
120 int aLength = mHttpRequest.GetHeader ().length ();
121
122 /*----------------------------------------------------------------*/
123 aResult = mServer.Connect (mHttpRequest.GetHost (), mHttpRequest.GetPort (), mServerTimeout);
124 if (aResult < 0)
125 {
126 aResult = ERROR_PROXY_FAILED_TO_CONNECT_TO_SERVER;
127 CRX_ADD_SUBCLASS_ERROR (mServer);
128 CRX_ERROR_SET (aResult, "Failed to connect to server <%s>.", mHttpRequest.GetURL ().c_str ());
129 return aResult;
130 }
131
132 aResult = mServer.Send (mHttpRequest.GetHeader ().c_str (), aLength);
133 if (aResult != aLength)
134 {
135 CRX_ADD_SUBCLASS_ERROR (mServer);
136 CRX_ERROR_SET (aResult, "Failed to send to server <%s>.", mHttpRequest.GetURL ().c_str ());
137 }
138 /*----------------------------------------------------------------*/
139
140 return aResult < 0 ? aResult : 0;
141}
142
143int
144CRXProxy::ReceiveResponse (void)
145{
146 int aResult = 0;
147 char aBuffer;
148
149 std::string aHttpHeader;
150 bool aRemainHeader = true;
151
152 /*----------------------------------------------------------------*/
153 for (;;)
154 {
155 aResult = mServer.Receive (&aBuffer, 1);
156 if (aResult < 0)
157 {
158 aResult = ERROR_PROXY_FAILED_TO_RECEIVE_REQUEST;
159 CRX_ADD_SUBCLASS_ERROR (mServer);
160 CRX_ERROR_SET (aResult, "Failed to receive from server.");
161 break;
162 }
163 else if (aResult == 0)
164 {
165 CRX_ADD_SUBCLASS_ERROR (mServer);
166 CRX_ERROR_SET (aResult, "Receive zero-byte from server.");
167 break;
168 }
169
170 if (aRemainHeader)
171 {
172 aHttpHeader += aBuffer;
173 if (aHttpHeader.rfind (CRLF2) != std::string::npos)
174 {
175 mHttpResponse.SetHeader (aHttpHeader.c_str ());
176 aRemainHeader = false;
177
178 if (mHttpResponse.GetStatusCode () == 304) break;
179 }
180 }
181 else
182 {
183 aResult = mHttpResponse.SetContent (&aBuffer, aResult);
184 if (aResult < 0)
185 {
186 aResult = ERROR_PROXY_FAILED_TO_SET_RESPONSE;
187 CRX_ERROR_SET (aResult, "Failed to set response.");
188 break;
189 }
190 else if (aResult == 0)
191 break;
192 }
193 }
194 /*----------------------------------------------------------------*/
195
196 return aResult < 0 ? aResult : 0;
197}
198
199int
200CRXProxy::SendResponse (void)
201{
202 int aResult = 0;
203 int aLength = 0;
204
205 /*----------------------------------------------------------------*/
206 aLength = mHttpResponse.GetHeader ().length ();
207 aResult = mClient.Send (mHttpResponse.GetHeader ().c_str (), aLength);
208 if (aResult != aLength)
209 {
210 CRX_ADD_SUBCLASS_ERROR (mClient);
211 CRX_ERROR_SET (aResult, "Failed to send to client.");
212 return aResult;
213 }
214
215 aLength = mHttpResponse.GetContentLength ();
216 aResult = mClient.Send (mHttpResponse.GetContentBody (), aLength);
217 if (aResult != aLength)
218 {
219 CRX_ADD_SUBCLASS_ERROR (mClient);
220 CRX_ERROR_SET (aResult, "Failed to send to client.");
221 }
222 /*----------------------------------------------------------------*/
223
224 return aResult < 0 ? aResult : 0;
225}
226
227CRXFilter &
228CRXProxy::GetFilter (void) const
229{
230 /*----------------------------------------------------------------*/
231 /*----------------------------------------------------------------*/
232
233 return mFilter;
234}
235
236CRXHttpRequest &
237CRXProxy::GetHttpRequest (void)
238{
239 /*----------------------------------------------------------------*/
240 /*----------------------------------------------------------------*/
241
242 return mHttpRequest;
243}
244
245CRXHttpResponse &
246CRXProxy::GetHttpResponse (void)
247{
248 /*----------------------------------------------------------------*/
249 /*----------------------------------------------------------------*/
250
251 return mHttpResponse;
252}
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