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root/proj/trunk/Search/HttpHandler.cpp

Comparing trunk/Search/HttpHandler.cpp (file contents):
Revision 13 by douglas, 2002-12-06T19:56:56-08:00 vs.
Revision 209 by douglas, 2003-07-18T00:26:41-07:00

#	Line 1 | Line 1
1		/* ============================================================================
2		* Douglas Thrift's Search Engine License
3		*
4	<	* Copyright (C) 2002, Douglas Thrift. All Rights Reserved.
4	>	* Copyright (C) 2002-2003, Douglas Thrift. All Rights Reserved.
5		* Redistribution and use in source and binary forms, with or without
6		* modification, are permitted provided that the following conditions are met:
7		*
#	Line 46 | Line 46
46		//
47		// Douglas Thrift
48		//
49	<	// HttpHandler.cpp
49	>	// $Id: HttpHandler.cpp,v 1.21 2003/07/18 07:26:41 douglas Exp $
50
51		#include "HttpHandler.h"
52
53	+	// Lovely C Sockets!
54	+	#ifndef _WIN32
55	+	// BSD Sockets
56	+	#include <unistd.h>
57	+	#include <sys/types.h>
58	+	#include <sys/socket.h>
59	+	#include <netinet/in.h>
60	+	#include <netdb.h>
61	+
62	+	#define INVALID_SOCKET -1
63	+	#define SOCKET_ERROR -1
64	+
65	+	inline int closesocket(SOCKET s) { return close(s); }
66	+	#endif
67	+
68		HttpHandler::HttpHandler()
69		{
70	+	buffer = new char[BUFSIZ + 1];
71	+
72		#ifdef _WIN32
73	<	WSADATA data;
57	<	if (WSAStartup(MAKEWORD(2, 0) != 0, &data))
73	>	if (WSAStartup(MAKEWORD(2, 0), &data) != 0)
74		{
75	<	error(program + ": WSAStartup()");
75	>	error(program + ": WSAStartup");
76		exit(1);
77		}
78		#endif // _WIN32
79
80	<	begin = 0;
80	>	binary = false;
81	>	length = 0;
82	>	chunked = false;
83	>	#ifdef _OpenSSL_
84	>	tls = false;
85	>	#endif
86		}
87
88		HttpHandler::~HttpHandler()
89		{
90	+	delete [] buffer;
91	+
92		#ifdef _WIN32
93		WSACleanup();
94		#endif // _WIN32
95		}
96
97	<	bool HttpHandler::connect(URL &url, bool head)
97	>	bool HttpHandler::handle(URL &url, const string referer, bool head)
98		{
99		bool answer = false;
100
101	<	//      if (status != JNI_ERR)
102	<	//      {
103	<	//              if (cls != 0)
104	<	//              {
105	<	//                      if (mid != 0)
106	<	//                      {
107	<	//                              jstring addressJ = env->NewStringUTF(url.getAddress().c_str());
108	<	//                              jint portJ = url.getPort();
109	<	//                              jstring pathJ = env->NewStringUTF(url.getPath().c_str());
110	<	//                              jstring programNameJ = env->NewStringUTF(programName.c_str());
111	<	//                              jstring programVersionJ =
112	<	//                                      env->NewStringUTF(programVersion.c_str());
113	<
114	<	//                              jstring pageJ = (jstring)env->CallStaticObjectMethod(cls, mid,
115	<	//                                      addressJ, portJ, pathJ, programNameJ, programVersionJ);
116	<
117	<	//                              const char* pageC = env->GetStringUTFChars(pageJ, 0);
118	<	//                              page = pageC;
119	<	//                              env->ReleaseStringUTFChars(pageJ, pageC);
120	<
121	<	//                              if (page != "unknown host\n" && page != "io exception\n" &&
122	<	//                                      page != "bad headers\n") answer = true;
123	<	//                      }
124	<	//              }
125	<	//      }
101	>	if ((http = socket(PF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
102	>	{
103	>	error(program + ": Socket");
104	>	exit(1);
105	>	}
106	>
107	>	sockaddr_in address;
108	>	hostent* host;
109	>
110	>	address.sin_family = AF_INET;
111	>
112	>	if ((host = gethostbyname(url.getAddress().c_str())) == NULL)
113	>	{
114	>	error(program + ": Host: " + url.getAddress(), true);
115	>	return answer;
116	>	}
117	>
118	>	address.sin_addr = *((in_addr*)*host->h_addr_list);
119	>	address.sin_port = htons(url.getPort());
120	>
121	>	if (connect(http, (sockaddr*)&address, sizeof(sockaddr_in)) ==
122	>	SOCKET_ERROR)
123	>	{
124	>	error(program + ": Connect");
125	>	return answer;
126	>	}
127	>
128	>	#ifdef _OpenSSL_
129	>	if (url.getTls())
130	>	{
131	>	tls = true;
132	>
133	>	if (!starttls()) return answer;
134	>	}
135	>	#endif
136	>
137	>	if (head)
138	>	{
139	>	putline("HEAD " + url.getPath() + " HTTP/1.1");
140	>	}
141	>	else
142	>	{
143	>	putline("GET " + url.getPath() + " HTTP/1.1");
144	>	}
145	>
146	>	putline("Accept: text/html; text/plain");
147	>	#ifndef _OpenSSL_
148	>	putline("User-Agent: " + agent(true) + ' ' + platform());
149	>
150	>	if (url.getPort() == 80)
151	>	#else
152	>	putline("User-Agent: " + agent(true) + ' ' + platform() + ' '
153	>	+ openssl(true));
154	>
155	>	if (url.getPort() == 80 && tls || url.getPort() == 443 && tls)
156	>	#endif
157	>	{
158	>	putline("Host: " + url.getAddress());
159	>	}
160	>	else
161	>	{
162	>	ostringstream port;
163	>
164	>	port << url.getPort();
165	>
166	>	putline("Host: " + url.getAddress() + ':' + port.str());
167	>	}
168	>
169	>	if (referer != "")
170	>	{
171	>	putline("Referer: " + referer);
172	>	}
173	>
174	>	putline("Connection: close");
175	>	putline();
176	>
177	>	code response;
178	>	string line;
179	>
180	>	do
181	>	{
182	>	line = getline();
183	>
184	>	if (line.find("HTTP/") != 0)
185	>	{
186	>	return answer;
187	>	}
188	>
189	>	unsigned dot = line.find('.');
190	>	unsigned space = line.find(' ');
191	>
192	>	unsigned major = strtoul(line.substr(5, dot - 5).c_str(), 0, 10);
193	>	unsigned minor = strtoul(line.substr(dot + 1, space - dot - 1).c_str(),
194	>	0, 10);
195	>
196	>	if (major > 1)
197	>	{
198	>	cerr << program << ": Potentially Incompatible Server: HTTP/" <<
199	>	major << "." << minor << "\n";
200	>
201	>	return answer;
202	>	}
203	>
204	>	response = code(strtoul(line.substr(space + 1).c_str(), 0, 10));
205	>
206	>	if (response < ok) do line = getline(); while (line != "");
207	>	}
208	>	while (response < ok);
209	>
210	>	do
211	>	{
212	>	line = getline();
213	>
214	>	if (line != "")
215	>	{
216	>	unsigned colon = line.find(':');
217	>
218	>	string field = line.substr(0, colon);
219	>	string value = line.substr(colon + 1);
220	>
221	>	while (isspace(value[0])) value.erase(0, 1);
222	>
223	>	if (field == "Content-Type")
224	>	{
225	>	type = value;
226	>	}
227	>	else if (field == "Content-Length")
228	>	{
229	>	length = strtoul(value.c_str(), 0, 10);
230	>	}
231	>	else if (field == "Location")
232	>	{
233	>	location = value;
234	>	}
235	>	else if (field == "Transfer-Encoding")
236	>	{
237	>	chunked = value == "chunked";
238	>	}
239	>	}
240	>	}
241	>	while (line != "");
242	>
243	>	switch (response)
244	>	{
245	>	case ok:
246	>	if (debug) cerr << "response = " << response << "\n";
247	>	answer = true;
248	>	break;
249	>	case choices:
250	>	case moved:
251	>	case found:
252	>	if (debug) cerr << "response = " << response << "\n"
253	>	<< "location = " << location << "\n";
254	>	location = getLink(location, url);
255	>	break;
256	>	case notfound:
257	>	case internal:
258	>	if (debug) cerr << "response = " << response << "\n";
259	>	break;
260	>	default:
261	>	if (debug) cerr << "response = " << response << "\n";
262	>	if (response <= 299)
263	>	{
264	>	answer = true;
265	>	}
266	>	else if (response <= 399)
267	>	{
268	>	location = getLink(location, url);
269	>	}
270	>	break;
271	>	}
272	>
273	>	if (!head && answer) populate();
274
275		return answer;
276		}
277
278	<	HttpHandler& HttpHandler::getline(string& line, char endline)
278	>	void HttpHandler::clear()
279		{
280	<	int end = page.find(endline, begin);
110	<	int newline = page.find('\n', begin);
111	<
112	<	if (newline < end || end == string::npos)
280	>	if (tls)
281		{
282	<	end = newline;
282	>	SSL_shutdown(ssl);
283	>	SSL_free(ssl);
284	>	SSL_CTX_free(ctx);
285		}
286
287	<	line = page.substr(begin, end - begin);
287	>	closesocket(http);
288
289	<	if (end == string::npos)
289	>	type = "";
290	>	length = 0;
291	>	location = "";
292	>	page.clear();
293	>	page.str("");
294	>	chunked = false;
295	>	#ifdef _OpenSSL_
296	>	tls = false;
297	>	#endif
298	>	}
299	>
300	>	void HttpHandler::populate()
301	>	{
302	>	if (!chunked)
303		{
304	<	begin = end;
304	>	unsigned left = length;
305	>
306	>	while (left > 0)
307	>	{
308	>	memset(buffer, 0, BUFSIZ + 1);
309	>
310	>	unsigned bytes = left > BUFSIZ ? BUFSIZ : left;
311	>	long received;
312	>
313	>	while (true)
314	>	{
315	>	#ifndef _OpenSSL_
316	>	if ((received = recv(http, buffer, bytes, 0)) == SOCKET_ERROR)
317	>	{
318	>	error(program + ": Recv");
319	>	exit(1);
320	>	}
321	>	#else
322	>	if ((received = !tls ? recv(http, buffer, bytes, 0) :
323	>	SSL_read(ssl, buffer, bytes)) <= 0)
324	>	{
325	>	!tls ? error(program + ": Recv") : error(program +
326	>	": SSL Read", int(received));
327	>	}
328	>	#endif
329	>	else if (received != bytes)
330	>	{
331	>	left -= received;
332	>	page << buffer;
333	>
334	>	memset(buffer, 0, BUFSIZ + 1);
335	>
336	>	bytes -= received;
337	>	}
338	>	else
339	>	{
340	>	break;
341	>	}
342	>	}
343	>
344	>	page << buffer;
345	>	left -= bytes;
346	>	}
347		}
348		else
349		{
350	<	begin = end + 1;
350	>	unsigned chunk;
351	>
352	>	do
353	>	{
354	>	chunk = strtoul(getline().c_str(), 0, 16);
355	>
356	>	unsigned left = chunk;
357	>
358	>	while (left > 0)
359	>	{
360	>	memset(buffer, 0, BUFSIZ + 1);
361	>
362	>	unsigned bytes = left > BUFSIZ ? BUFSIZ : left;
363	>	long received;
364	>
365	>	while (true)
366	>	{
367	>	#ifndef _OpenSSL_
368	>	if ((received = recv(http, buffer, bytes, 0)) ==
369	>	SOCKET_ERROR)
370	>	{
371	>	error(program + ": Recv");
372	>	exit(1);
373	>	}
374	>	#else
375	>	if ((received = !tls ? recv(http, buffer, bytes, 0) :
376	>	SSL_read(ssl, buffer, bytes)) <= 0)
377	>	{
378	>	!tls ? error(program + ": Recv") : error(program +
379	>	": SSL Read", int(received));
380	>	exit(1);
381	>	}
382	>	#endif
383	>	else if (received != bytes)
384	>	{
385	>	left -= received;
386	>	page << buffer;
387	>
388	>	memset(buffer, 0, BUFSIZ + 1);
389	>
390	>	bytes -= received;
391	>	}
392	>	else
393	>	{
394	>	break;
395	>	}
396	>	}
397	>
398	>	page << buffer;
399	>	left -= bytes;
400	>	}
401	>
402	>	getline();
403	>	length += chunk;
404	>	}
405	>	while (chunk > 0);
406		}
407
408	<	return *this;
408	>	if (!binary)
409	>	{
410	>	string page = this->page.str();
411	>
412	>	for (unsigned index = 0; index < page.length(); index++)
413	>	{
414	>	if (page[index] == '\r' && (index + 1 < page.length()) ? page[index +
415	>	1] == '\n' : false)
416	>	{
417	>	page.erase(index, 1);
418	>	}
419	>	else if (page[index] == '\r')
420	>	{
421	>	page[index] = '\n';
422	>	}
423	>	}
424	>
425	>	this->page.str(page);
426	>	}
427		}
428
429	<	bool HttpHandler::good()
429	>	void HttpHandler::putline(const string line)
430		{
431	<	bool answer = true;
431	>	sprintf(buffer, "%s\r\n", line.c_str());
432
433	<	if (begin >= page.length())
433	>	#ifndef _OpenSSL_
434	>	if (send(http, buffer, strlen(buffer), 0) == SOCKET_ERROR)
435		{
436	<	answer = false;
436	>	error(program + ": Send");
437	>	exit(1);
438		}
439	<	else if (begin == string::npos)
439	>	#else
440	>	if (!tls)
441		{
442	<	answer = false;
442	>	if (send(http, buffer, strlen(buffer), 0) == SOCKET_ERROR)
443	>	{
444	>	error(program + ": Send");
445	>	exit(1);
446	>	}
447		}
448	+	else
449	+	{
450	+	int number;
451
452	<	return answer;
452	>	if ((number = SSL_write(ssl, buffer, strlen(buffer))) <= 0)
453	>	{
454	>	error(program + ": SSL Write", number);
455	>	exit(1);
456	>	}
457	>	}
458	>	#endif
459		}
460
461	<	void HttpHandler::clear()
461	>	string HttpHandler::getline()
462		{
463	<	begin = 0;
464	<	page = "";
463	>	string line;
464	>	char byte;
465	>
466	>	do
467	>	{
468	>	#ifndef _OpenSSL_
469	>	if (recv(http, &byte, 1, 0) == SOCKET_ERROR)
470	>	{
471	>	error(program + ": Recv");
472	>	}
473	>	#else
474	>	if (!tls)
475	>	{
476	>	if (recv(http, &byte, 1, 0) == SOCKET_ERROR)
477	>	{
478	>	error(program + ": Recv");
479	>	}
480	>	}
481	>	else
482	>	{
483	>	int number;
484	>
485	>	if ((number = SSL_read(ssl, &byte, 1)) <= 0)
486	>	{
487	>	error(program + ": SSL Read", number);
488	>	}
489	>	}
490	>	#endif
491	>
492	>	if (byte != '\r' && byte != '\n')
493	>	{
494	>	line += byte;
495	>	}
496	>	}
497	>	while (byte != '\n');
498	>
499	>	return line;
500		}
501
502	<	void HttpHandler::error(const string prefix, bool host)
502	>	void HttpHandler::error(const string& prefix, bool host)
503		{
504		#ifdef _WIN32
505		string error;
#	Line 158 | Line 507 | void HttpHandler::error(const string pre
507		switch (WSAGetLastError())
508		{
509		case WSAEACCES:
510	<	error = "Permission denied.";
510	>	error = "Permission denied";
511		break;
512		case WSAEADDRINUSE:
513	<	error = "Address already in use.";
513	>	error = "Address already in use";
514		break;
515		case WSAEADDRNOTAVAIL:
516	<	error = "Cannot assign requested address.";
516	>	error = "Cannot assign requested address";
517		break;
518		case WSAEAFNOSUPPORT:
519	<	error = "Address family not supported by protocol family.";
519	>	error = "Address family not supported by protocol family";
520		break;
521		case WSAEALREADY:
522	<	error = "Operation already in progress.";
522	>	error = "Operation already in progress";
523		break;
524		case WSAECONNABORTED:
525	<	error = "Software caused connection abort.";
525	>	error = "Software caused connection abort";
526		break;
527		case WSAECONNREFUSED:
528	<	error = "Connection refused.";
528	>	error = "Connection refused";
529		break;
530		case WSAECONNRESET:
531	<	error = "Connection reset by peer.";
531	>	error = "Connection reset by peer";
532		break;
533		case WSAEDESTADDRREQ:
534	<	error = "Destination address required.";
534	>	error = "Destination address required";
535		break;
536		case WSAEFAULT:
537	<	error = "Bad address.";
537	>	error = "Bad address";
538		break;
539		case WSAEHOSTDOWN:
540	<	error = "Host is down.";
540	>	error = "Host is down";
541		break;
542		case WSAEHOSTUNREACH:
543	<	error = "No route to host.";
543	>	error = "No route to host";
544		break;
545		case WSAEINPROGRESS:
546	<	error = "Operation now in progress.";
546	>	error = "Operation now in progress";
547		break;
548		case WSAEINTR:
549	<	error = "Interrupted function call.";
549	>	error = "Interrupted function call";
550		break;
551		case WSAEINVAL:
552	<	error = "Invalid argument.";
552	>	error = "Invalid argument";
553		break;
554		case WSAEISCONN:
555	<	error = "Socket is already connected.";
555	>	error = "Socket is already connected";
556		break;
557		case WSAEMFILE:
558	<	error = "Too many open files.";
558	>	error = "Too many open files";
559		break;
560		case WSAEMSGSIZE:
561	<	error = "Message too long.";
561	>	error = "Message too long";
562		break;
563		case WSAENETDOWN:
564	<	error = "Network is down.";
564	>	error = "Network is down";
565		break;
566		case WSAENETRESET:
567	<	error = "Network dropped connection on reset.";
567	>	error = "Network dropped connection on reset";
568		break;
569		case WSAENETUNREACH:
570	<	error = "Network is unreachable.";
570	>	error = "Network is unreachable";
571		break;
572		case WSAENOBUFS:
573	<	error = "No buffer space available.";
573	>	error = "No buffer space available";
574		break;
575		case WSAENOPROTOOPT:
576	<	error = "Bad protocol option.";
576	>	error = "Bad protocol option";
577		break;
578		case WSAENOTCONN:
579	<	error = "Socket is not connected.";
579	>	error = "Socket is not connected";
580		break;
581		case WSAENOTSOCK:
582	<	error = "Socket operation on non-socket.";
582	>	error = "Socket operation on non-socket";
583		break;
584		case WSAEOPNOTSUPP:
585	<	error = "Operation not supported.";
585	>	error = "Operation not supported";
586		break;
587		case WSAEPFNOSUPPORT:
588	<	error = "Protocol family not supported.";
588	>	error = "Protocol family not supported";
589		break;
590		case WSAEPROCLIM:
591	<	error = "Too many processes.";
591	>	error = "Too many processes";
592		break;
593		case WSAEPROTONOSUPPORT:
594	<	error = "Protocol not supported.";
594	>	error = "Protocol not supported";
595		break;
596		case WSAEPROTOTYPE:
597	<	error = "Protocol wrong type for socket.";
597	>	error = "Protocol wrong type for socket";
598		break;
599		case WSAESHUTDOWN:
600	<	error = "Cannot send after socket shutdown.";
600	>	error = "Cannot send after socket shutdown";
601		break;
602		case WSAESOCKTNOSUPPORT:
603	<	error = "Socket type not supported.";
603	>	error = "Socket type not supported";
604		break;
605		case WSAETIMEDOUT:
606	<	error = "Connection timed out.";
606	>	error = "Connection timed out";
607		break;
608		case WSATYPE_NOT_FOUND:
609	<	error = "Class type not found.";
609	>	error = "Class type not found";
610		break;
611		case WSAEWOULDBLOCK:
612	<	error = "Resource temporarily unavailable.";
612	>	error = "Resource temporarily unavailable";
613		break;
614		case WSAHOST_NOT_FOUND:
615	<	error = "Host not found.";
615	>	error = "Host not found";
616		break;
617		case WSA_INVALID_HANDLE:
618	<	error = "Specified event object handle is invalid.";
618	>	error = "Specified event object handle is invalid";
619		break;
620		case WSA_INVALID_PARAMETER:
621	<	error = "One or more parameters are invalid.";
621	>	error = "One or more parameters are invalid";
622		break;
623		//      case WSAINVALIDPROCTABLE:
624	<	//              error = "Invalid procedure table from service provider.";
624	>	//              error = "Invalid procedure table from service provider";
625		//              break;
626		//      case WSAINVALIDPROVIDER:
627	<	//              error = "Invalid service provider version number.";
627	>	//              error = "Invalid service provider version number";
628		//              break;
629		case WSA_IO_INCOMPLETE:
630	<	error = "Overlapped I/O event object not in signaled state.";
630	>	error = "Overlapped I/O event object not in signaled state";
631		break;
632		case WSA_IO_PENDING:
633	<	error = "Overlapped operations will complete later.";
633	>	error = "Overlapped operations will complete later";
634		break;
635		case WSA_NOT_ENOUGH_MEMORY:
636	<	error = "Insufficient memory available.";
636	>	error = "Insufficient memory available";
637		break;
638		case WSANOTINITIALISED:
639	<	error = "Successful WSAStartup not yet performed.";
639	>	error = "Successful WSAStartup not yet performed";
640		break;
641		case WSANO_DATA:
642	<	error = "Valid name, no data record of requested type.";
642	>	error = "Valid name, no data record of requested type";
643		break;
644		case WSANO_RECOVERY:
645	<	error = "This is a non-recoverable error.";
645	>	error = "This is a non-recoverable error";
646		break;
647		//      case WSAPROVIDERFAILEDINIT:
648	<	//              error = "Unable to initialize a service provider.";
648	>	//              error = "Unable to initialize a service provider";
649		//              break;
650		case WSASYSCALLFAILURE:
651	<	error = "System call failure.";
651	>	error = "System call failure";
652		break;
653		case WSASYSNOTREADY:
654	<	error = "Network subsystem is unavailable.";
654	>	error = "Network subsystem is unavailable";
655		break;
656		case WSATRY_AGAIN:
657	<	error = "Non-authoritative host not found.";
657	>	error = "Non-authoritative host not found";
658		break;
659		case WSAVERNOTSUPPORTED:
660	<	error = "WINSOCK.DLL version out of range.";
660	>	error = "WINSOCK.DLL version out of range";
661		break;
662		case WSAEDISCON:
663	<	error = "Graceful shutdown in progress.";
663	>	error = "Graceful shutdown in progress";
664		break;
665		case WSA_OPERATION_ABORTED:
666	<	error = "Overlapped operation aborted.";
666	>	error = "Overlapped operation aborted";
667		break;
668		default:
669	<	error = "Unknown error.";
669	>	error = "Unknown error";
670		break;
671		}
672
#	Line 325 | Line 674 | void HttpHandler::error(const string pre
674		#else
675		if (host)
676		{
677	<	herror(prefix.c_str());
677	>	string error;
678	>
679	>	switch (h_errno)
680	>	{
681	>	case HOST_NOT_FOUND:
682	>	error = "Unknown host";
683	>	break;
684	>	case TRY_AGAIN:
685	>	error = "Host name lookup failure";
686	>	break;
687	>	case NO_RECOVERY:
688	>	error = "Unknown server error";
689	>	break;
690	>	case NO_DATA:
691	>	error = "No address associated with name";
692	>	break;
693	>	default:
694	>	error = "Unknown error";
695	>	break;
696	>	}
697	>
698	>	cerr << prefix << ": " << error << "\n";
699		}
700		else
701		{
#	Line 333 | Line 703 | void HttpHandler::error(const string pre
703		}
704		#endif // _WIN32
705		}
706	+
707	+	#ifdef _OpenSSL_
708	+	void HttpHandler::error(const string& prefix, int number)
709	+	{
710	+	string error;
711	+
712	+	switch (SSL_get_error(ssl, number))
713	+	{
714	+	case SSL_ERROR_NONE:
715	+	error = "The TLS/SSL I/O operation completed";
716	+	break;
717	+	case SSL_ERROR_ZERO_RETURN:
718	+	error = "The TLS/SSL connection has been closed";
719	+	break;
720	+	case SSL_ERROR_WANT_READ:
721	+	case SSL_ERROR_WANT_WRITE:
722	+	case SSL_ERROR_WANT_CONNECT:
723	+	//      case SSL_ERROR_WANT_ACCEPT:
724	+	case SSL_ERROR_WANT_X509_LOOKUP:
725	+	error = "The operation did not complete";
726	+	break;
727	+	case SSL_ERROR_SYSCALL:
728	+	if (int err = ERR_get_error() != 0)
729	+	{
730	+	error = ERR_reason_error_string(err);
731	+	}
732	+	else
733	+	{
734	+	switch (number)
735	+	{
736	+	case 0:
737	+	error = "An EOF was observed that violates the protocol";
738	+	break;
739	+	case -1:
740	+	this->error(prefix);
741	+	return;
742	+	default:
743	+	error = "Unknown error";
744	+	break;
745	+	}
746	+	}
747	+	break;
748	+	case SSL_ERROR_SSL:
749	+	error = ERR_reason_error_string(ERR_get_error());
750	+	break;
751	+	default:
752	+	error = "Unknown error";
753	+	break;
754	+	}
755	+
756	+	cerr << prefix << ": " << error << "\n";
757	+	}
758	+
759	+	bool HttpHandler::starttls()
760	+	{
761	+	SSL_load_error_strings();
762	+	SSL_library_init();
763	+
764	+	//
765	+
766	+	return true;
767	+	}
768	+	#endif

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