src/common/http.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/common/http.cpp
// Purpose:     HTTP protocol
// Author:      Guilhem Lavaux
// Modified by: Simo Virokannas (authentication, Dec 2005)
// Created:     August 1997
// RCS-ID:      $Id$
// Copyright:   (c) 1997, 1998 Guilhem Lavaux
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_PROTOCOL_HTTP

#include <stdio.h>
#include <stdlib.h>

#ifndef WX_PRECOMP
    #include "wx/string.h"
    #include "wx/app.h"
#endif

#include "wx/tokenzr.h"
#include "wx/socket.h"
#include "wx/protocol/protocol.h"
#include "wx/url.h"
#include "wx/protocol/http.h"
#include "wx/sckstrm.h"

IMPLEMENT_DYNAMIC_CLASS(wxHTTP, wxProtocol)
IMPLEMENT_PROTOCOL(wxHTTP, wxT("http"), wxT("80"), true)

wxHTTP::wxHTTP()
  : wxProtocol()
{
    m_addr = NULL;
    m_read = false;
    m_proxy_mode = false;
    m_post_buf = wxEmptyString;
    m_http_response = 0;

    SetNotify(wxSOCKET_LOST_FLAG);
}

wxHTTP::~wxHTTP()
{
    ClearHeaders();

    delete m_addr;
}

void wxHTTP::ClearHeaders()
{
  m_headers.clear();
}

wxString wxHTTP::GetContentType()
{
    return GetHeader(wxT("Content-Type"));
}

void wxHTTP::SetProxyMode(bool on)
{
    m_proxy_mode = on;
}

wxHTTP::wxHeaderIterator wxHTTP::FindHeader(const wxString& header)
{
    wxHeaderIterator it = m_headers.begin();
    for ( wxHeaderIterator en = m_headers.end(); it != en; ++it )
    {
        if ( header.CmpNoCase(it->first) == 0 )
            break;
    }

    return it;
}

wxHTTP::wxHeaderConstIterator wxHTTP::FindHeader(const wxString& header) const
{
    wxHeaderConstIterator it = m_headers.begin();
    for ( wxHeaderConstIterator en = m_headers.end(); it != en; ++it )
    {
        if ( header.CmpNoCase(it->first) == 0 )
            break;
    }

    return it;
}

void wxHTTP::SetHeader(const wxString& header, const wxString& h_data)
{
    if (m_read) {
        ClearHeaders();
        m_read = false;
    }

    wxHeaderIterator it = FindHeader(header);
    if (it != m_headers.end())
        it->second = h_data;
    else
        m_headers[header] = h_data;
}

wxString wxHTTP::GetHeader(const wxString& header) const
{
    wxHeaderConstIterator it = FindHeader(header);

    return it == m_headers.end() ? wxGetEmptyString() : it->second;
}

wxString wxHTTP::GenerateAuthString(const wxString& user, const wxString& pass) const
{
    static const char *base64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";

    wxString buf;
    wxString toencode;

    buf.Printf(wxT("Basic "));

    toencode.Printf(wxT("%s:%s"),user.c_str(),pass.c_str());

    size_t len = toencode.length();
    const wxChar *from = toencode.c_str();
    while (len >= 3) { // encode full blocks first
        buf << wxString::Format(wxT("%c%c"), base64[(from[0] >> 2) & 0x3f], base64[((from[0] << 4) & 0x30) | ((from[1] >> 4) & 0xf)]);
        buf << wxString::Format(wxT("%c%c"), base64[((from[1] << 2) & 0x3c) | ((from[2] >> 6) & 0x3)], base64[from[2] & 0x3f]);
        from += 3;
        len -= 3;
    }
    if (len > 0) { // pad the remaining characters
        buf << wxString::Format(wxT("%c"), base64[(from[0] >> 2) & 0x3f]);
        if (len == 1) {
            buf << wxString::Format(wxT("%c="), base64[(from[0] << 4) & 0x30]);
        } else {
            buf << wxString::Format(wxT("%c%c"), base64[((from[0] << 4) & 0x30) | ((from[1] >> 4) & 0xf)], base64[(from[1] << 2) & 0x3c]);
        }
        buf << wxT("=");
    }

    return buf;
}

void wxHTTP::SetPostBuffer(const wxString& post_buf)
{
    m_post_buf = post_buf;
}

void wxHTTP::SendHeaders()
{
    typedef wxStringToStringHashMap::iterator iterator;
    wxString buf;

    for (iterator it = m_headers.begin(), en = m_headers.end(); it != en; ++it )
    {
        buf.Printf(wxT("%s: %s\r\n"), it->first.c_str(), it->second.c_str());

        const wxWX2MBbuf cbuf = buf.mb_str();
        Write(cbuf, strlen(cbuf));
    }
}

bool wxHTTP::ParseHeaders()
{
    wxString line;
    wxStringTokenizer tokenzr;

    ClearHeaders();
    m_read = true;

    for ( ;; )
    {
        m_perr = ReadLine(this, line);
        if (m_perr != wxPROTO_NOERR)
            return false;

        if (line.length() == 0)
            break;

        wxString left_str = line.BeforeFirst(':');
        m_headers[left_str] = line.AfterFirst(':').Strip(wxString::both);
    }
    return true;
}

bool wxHTTP::Connect(const wxString& host, unsigned short port)
{
    wxIPV4address *addr;

    if (m_addr) {
        delete m_addr;
        m_addr = NULL;
        Close();
    }

    m_addr = addr = new wxIPV4address();

    if (!addr->Hostname(host)) {
        delete m_addr;
        m_addr = NULL;
        m_perr = wxPROTO_NETERR;
        return false;
    }

    if ( port )
        addr->Service(port);
    else if (!addr->Service(wxT("http")))
        addr->Service(80);

    SetHeader(wxT("Host"), host);

    return true;
}

bool wxHTTP::Connect(wxSockAddress& addr, bool WXUNUSED(wait))
{
    if (m_addr) {
        delete m_addr;
        Close();
    }

    m_addr = addr.Clone();

    wxIPV4address *ipv4addr = wxDynamicCast(&addr, wxIPV4address);
    if (ipv4addr)
        SetHeader(wxT("Host"), ipv4addr->OrigHostname());

    return true;
}

bool wxHTTP::BuildRequest(const wxString& path, wxHTTP_Req req)
{
    const wxChar *request;

    switch (req)
    {
        case wxHTTP_GET:
            request = wxT("GET");
            break;

        case wxHTTP_POST:
            request = wxT("POST");
            if ( GetHeader( wxT("Content-Length") ).IsNull() )
                SetHeader( wxT("Content-Length"), wxString::Format( wxT("%lu"), (unsigned long)m_post_buf.Len() ) );
            break;

        default:
            return false;
    }

    m_http_response = 0;

    // If there is no User-Agent defined, define it.
    if (GetHeader(wxT("User-Agent")).IsNull())
        SetHeader(wxT("User-Agent"), wxT("wxWidgets 2.x"));

    // Send authentication information
    if (!m_username.empty() || !m_password.empty()) {
        SetHeader(wxT("Authorization"), GenerateAuthString(m_username, m_password));
    }

    SaveState();

    // we may use non blocking sockets only if we can dispatch events from them
    SetFlags( wxIsMainThread() && wxApp::IsMainLoopRunning() ? wxSOCKET_NONE
                                                             : wxSOCKET_BLOCK );
    Notify(false);

    wxString buf;
    buf.Printf(wxT("%s %s HTTP/1.0\r\n"), request, path.c_str());
    const wxWX2MBbuf pathbuf = buf.mb_str();
    Write(pathbuf, strlen(pathbuf));
    SendHeaders();
    Write("\r\n", 2);

    if ( req == wxHTTP_POST ) {
        Write(m_post_buf.mbc_str(), m_post_buf.Len());
        m_post_buf = wxEmptyString;
    }

    wxString tmp_str;
    m_perr = ReadLine(this, tmp_str);
    if (m_perr != wxPROTO_NOERR) {
        RestoreState();
        return false;
    }

    if (!tmp_str.Contains(wxT("HTTP/"))) {
        // TODO: support HTTP v0.9 which can have no header.
        // FIXME: tmp_str is not put back in the in-queue of the socket.
        SetHeader(wxT("Content-Length"), wxT("-1"));
        SetHeader(wxT("Content-Type"), wxT("none/none"));
        RestoreState();
        return true;
    }

    wxStringTokenizer token(tmp_str,wxT(' '));
    wxString tmp_str2;
    bool ret_value;

    token.NextToken();
    tmp_str2 = token.NextToken();

    m_http_response = wxAtoi(tmp_str2);

    switch ( tmp_str2[0u].GetValue() )
    {
        case wxT('1'):
            /* INFORMATION / SUCCESS */
            break;

        case wxT('2'):
            /* SUCCESS */
            break;

        case wxT('3'):
            /* REDIRECTION */
            break;

        default:
            m_perr = wxPROTO_NOFILE;
            RestoreState();
            return false;
    }

    ret_value = ParseHeaders();
    RestoreState();
    return ret_value;
}

class wxHTTPStream : public wxSocketInputStream
{
public:
    wxHTTP *m_http;
    size_t m_httpsize;
    unsigned long m_read_bytes;

    wxHTTPStream(wxHTTP *http) : wxSocketInputStream(*http), m_http(http) {}
    size_t GetSize() const { return m_httpsize; }
    virtual ~wxHTTPStream(void) { m_http->Abort(); }

protected:
    size_t OnSysRead(void *buffer, size_t bufsize);

    DECLARE_NO_COPY_CLASS(wxHTTPStream)
};

size_t wxHTTPStream::OnSysRead(void *buffer, size_t bufsize)
{
    if (m_httpsize > 0 && m_read_bytes >= m_httpsize)
    {
        m_lasterror = wxSTREAM_EOF;
        return 0;
    }

    size_t ret = wxSocketInputStream::OnSysRead(buffer, bufsize);
    m_read_bytes += ret;

    if (m_httpsize==(size_t)-1 && m_lasterror == wxSTREAM_READ_ERROR )
    {
        // if m_httpsize is (size_t) -1 this means read until connection closed
        // which is equivalent to getting a READ_ERROR, for clients however this
        // must be translated into EOF, as it is the expected way of signalling
        // end end of the content
        m_lasterror = wxSTREAM_EOF ;
    }

    return ret;
}

bool wxHTTP::Abort(void)
{
    return wxSocketClient::Close();
}

wxInputStream *wxHTTP::GetInputStream(const wxString& path)
{
    wxHTTPStream *inp_stream;

    wxString new_path;

    m_perr = wxPROTO_CONNERR;
    if (!m_addr)
        return NULL;

    // We set m_connected back to false so wxSocketBase will know what to do.
#ifdef __WXMAC__
    wxSocketClient::Connect(*m_addr , false );
    wxSocketClient::WaitOnConnect(10);

    if (!wxSocketClient::IsConnected())
        return NULL;
#else
    if (!wxProtocol::Connect(*m_addr))
        return NULL;
#endif

    if (!BuildRequest(path, m_post_buf.empty() ? wxHTTP_GET : wxHTTP_POST))
        return NULL;

    inp_stream = new wxHTTPStream(this);

    if (!GetHeader(wxT("Content-Length")).empty())
        inp_stream->m_httpsize = wxAtoi(GetHeader(wxT("Content-Length")));
    else
        inp_stream->m_httpsize = (size_t)-1;

    inp_stream->m_read_bytes = 0;

    Notify(false);
    SetFlags(wxSOCKET_BLOCK | wxSOCKET_WAITALL);

    return inp_stream;
}

#endif // wxUSE_PROTOCOL_HTTP
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: src/common/http.cpp
	3	// Purpose: HTTP protocol
	4	// Author: Guilhem Lavaux
	5	// Modified by: Simo Virokannas (authentication, Dec 2005)
	6	// Created: August 1997
	7	// RCS-ID: $Id$
	8	// Copyright: (c) 1997, 1998 Guilhem Lavaux
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	// For compilers that support precompilation, includes "wx.h".
	13	#include "wx/wxprec.h"
	14
	15	#ifdef __BORLANDC__
	16	#pragma hdrstop
	17	#endif
	18
	19	#if wxUSE_PROTOCOL_HTTP
	20
	21	#include <stdio.h>
	22	#include <stdlib.h>
	23
	24	#ifndef WX_PRECOMP
	25	#include "wx/string.h"
	26	#include "wx/app.h"
	27	#endif
	28
	29	#include "wx/tokenzr.h"
	30	#include "wx/socket.h"
	31	#include "wx/protocol/protocol.h"
	32	#include "wx/url.h"
	33	#include "wx/protocol/http.h"
	34	#include "wx/sckstrm.h"
	35
	36	IMPLEMENT_DYNAMIC_CLASS(wxHTTP, wxProtocol)
	37	IMPLEMENT_PROTOCOL(wxHTTP, wxT("http"), wxT("80"), true)
	38
	39	wxHTTP::wxHTTP()
	40	: wxProtocol()
	41	{
	42	m_addr = NULL;
	43	m_read = false;
	44	m_proxy_mode = false;
	45	m_post_buf = wxEmptyString;
	46	m_http_response = 0;
	47
	48	SetNotify(wxSOCKET_LOST_FLAG);
	49	}
	50
	51	wxHTTP::~wxHTTP()
	52	{
	53	ClearHeaders();
	54
	55	delete m_addr;
	56	}
	57
	58	void wxHTTP::ClearHeaders()
	59	{
	60	m_headers.clear();
	61	}
	62
	63	wxString wxHTTP::GetContentType()
	64	{
	65	return GetHeader(wxT("Content-Type"));
	66	}
	67
	68	void wxHTTP::SetProxyMode(bool on)
	69	{
	70	m_proxy_mode = on;
	71	}
	72
	73	wxHTTP::wxHeaderIterator wxHTTP::FindHeader(const wxString& header)
	74	{
	75	wxHeaderIterator it = m_headers.begin();
	76	for ( wxHeaderIterator en = m_headers.end(); it != en; ++it )
	77	{
	78	if ( header.CmpNoCase(it->first) == 0 )
	79	break;
	80	}
	81
	82	return it;
	83	}
	84
	85	wxHTTP::wxHeaderConstIterator wxHTTP::FindHeader(const wxString& header) const
	86	{
	87	wxHeaderConstIterator it = m_headers.begin();
	88	for ( wxHeaderConstIterator en = m_headers.end(); it != en; ++it )
	89	{
	90	if ( header.CmpNoCase(it->first) == 0 )
	91	break;
	92	}
	93
	94	return it;
	95	}
	96
	97	void wxHTTP::SetHeader(const wxString& header, const wxString& h_data)
	98	{
	99	if (m_read) {
	100	ClearHeaders();
	101	m_read = false;
	102	}
	103
	104	wxHeaderIterator it = FindHeader(header);
	105	if (it != m_headers.end())
	106	it->second = h_data;
	107	else
	108	m_headers[header] = h_data;
	109	}
	110
	111	wxString wxHTTP::GetHeader(const wxString& header) const
	112	{
	113	wxHeaderConstIterator it = FindHeader(header);
	114
	115	return it == m_headers.end() ? wxGetEmptyString() : it->second;
	116	}
	117
	118	wxString wxHTTP::GenerateAuthString(const wxString& user, const wxString& pass) const
	119	{
	120	static const char *base64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
	121
	122	wxString buf;
	123	wxString toencode;
	124
	125	buf.Printf(wxT("Basic "));
	126
	127	toencode.Printf(wxT("%s:%s"),user.c_str(),pass.c_str());
	128
	129	size_t len = toencode.length();
	130	const wxChar *from = toencode.c_str();
	131	while (len >= 3) { // encode full blocks first
	132	buf << wxString::Format(wxT("%c%c"), base64[(from[0] >> 2) & 0x3f], base64[((from[0] << 4) & 0x30) \| ((from[1] >> 4) & 0xf)]);
	133	buf << wxString::Format(wxT("%c%c"), base64[((from[1] << 2) & 0x3c) \| ((from[2] >> 6) & 0x3)], base64[from[2] & 0x3f]);
	134	from += 3;
	135	len -= 3;
	136	}
	137	if (len > 0) { // pad the remaining characters
	138	buf << wxString::Format(wxT("%c"), base64[(from[0] >> 2) & 0x3f]);
	139	if (len == 1) {
	140	buf << wxString::Format(wxT("%c="), base64[(from[0] << 4) & 0x30]);
	141	} else {
	142	buf << wxString::Format(wxT("%c%c"), base64[((from[0] << 4) & 0x30) \| ((from[1] >> 4) & 0xf)], base64[(from[1] << 2) & 0x3c]);
	143	}
	144	buf << wxT("=");
	145	}
	146
	147	return buf;
	148	}
	149
	150	void wxHTTP::SetPostBuffer(const wxString& post_buf)
	151	{
	152	m_post_buf = post_buf;
	153	}
	154
	155	void wxHTTP::SendHeaders()
	156	{
	157	typedef wxStringToStringHashMap::iterator iterator;
	158	wxString buf;
	159
	160	for (iterator it = m_headers.begin(), en = m_headers.end(); it != en; ++it )
	161	{
	162	buf.Printf(wxT("%s: %s\r\n"), it->first.c_str(), it->second.c_str());
	163
	164	const wxWX2MBbuf cbuf = buf.mb_str();
	165	Write(cbuf, strlen(cbuf));
	166	}
	167	}
	168
	169	bool wxHTTP::ParseHeaders()
	170	{
	171	wxString line;
	172	wxStringTokenizer tokenzr;
	173
	174	ClearHeaders();
	175	m_read = true;
	176
	177	for ( ;; )
	178	{
	179	m_perr = ReadLine(this, line);
	180	if (m_perr != wxPROTO_NOERR)
	181	return false;
	182
	183	if (line.length() == 0)
	184	break;
	185
	186	wxString left_str = line.BeforeFirst(':');
	187	m_headers[left_str] = line.AfterFirst(':').Strip(wxString::both);
	188	}
	189	return true;
	190	}
	191
	192	bool wxHTTP::Connect(const wxString& host, unsigned short port)
	193	{
	194	wxIPV4address *addr;
	195
	196	if (m_addr) {
	197	delete m_addr;
	198	m_addr = NULL;
	199	Close();
	200	}
	201
	202	m_addr = addr = new wxIPV4address();
	203
	204	if (!addr->Hostname(host)) {
	205	delete m_addr;
	206	m_addr = NULL;
	207	m_perr = wxPROTO_NETERR;
	208	return false;
	209	}
	210
	211	if ( port )
	212	addr->Service(port);
	213	else if (!addr->Service(wxT("http")))
	214	addr->Service(80);
	215
	216	SetHeader(wxT("Host"), host);
	217
	218	return true;
	219	}
	220
	221	bool wxHTTP::Connect(wxSockAddress& addr, bool WXUNUSED(wait))
	222	{
	223	if (m_addr) {
	224	delete m_addr;
	225	Close();
	226	}
	227
	228	m_addr = addr.Clone();
	229
	230	wxIPV4address *ipv4addr = wxDynamicCast(&addr, wxIPV4address);
	231	if (ipv4addr)
	232	SetHeader(wxT("Host"), ipv4addr->OrigHostname());
	233
	234	return true;
	235	}
	236
	237	bool wxHTTP::BuildRequest(const wxString& path, wxHTTP_Req req)
	238	{
	239	const wxChar *request;
	240
	241	switch (req)
	242	{
	243	case wxHTTP_GET:
	244	request = wxT("GET");
	245	break;
	246
	247	case wxHTTP_POST:
	248	request = wxT("POST");
	249	if ( GetHeader( wxT("Content-Length") ).IsNull() )
	250	SetHeader( wxT("Content-Length"), wxString::Format( wxT("%lu"), (unsigned long)m_post_buf.Len() ) );
	251	break;
	252
	253	default:
	254	return false;
	255	}
	256
	257	m_http_response = 0;
	258
	259	// If there is no User-Agent defined, define it.
	260	if (GetHeader(wxT("User-Agent")).IsNull())
	261	SetHeader(wxT("User-Agent"), wxT("wxWidgets 2.x"));
	262
	263	// Send authentication information
	264	if (!m_username.empty() \|\| !m_password.empty()) {
	265	SetHeader(wxT("Authorization"), GenerateAuthString(m_username, m_password));
	266	}
	267
	268	SaveState();
	269
	270	// we may use non blocking sockets only if we can dispatch events from them
	271	SetFlags( wxIsMainThread() && wxApp::IsMainLoopRunning() ? wxSOCKET_NONE
	272	: wxSOCKET_BLOCK );
	273	Notify(false);
	274
	275	wxString buf;
	276	buf.Printf(wxT("%s %s HTTP/1.0\r\n"), request, path.c_str());
	277	const wxWX2MBbuf pathbuf = buf.mb_str();
	278	Write(pathbuf, strlen(pathbuf));
	279	SendHeaders();
	280	Write("\r\n", 2);
	281
	282	if ( req == wxHTTP_POST ) {
	283	Write(m_post_buf.mbc_str(), m_post_buf.Len());
	284	m_post_buf = wxEmptyString;
	285	}
	286
	287	wxString tmp_str;
	288	m_perr = ReadLine(this, tmp_str);
	289	if (m_perr != wxPROTO_NOERR) {
	290	RestoreState();
	291	return false;
	292	}
	293
	294	if (!tmp_str.Contains(wxT("HTTP/"))) {
	295	// TODO: support HTTP v0.9 which can have no header.
	296	// FIXME: tmp_str is not put back in the in-queue of the socket.
	297	SetHeader(wxT("Content-Length"), wxT("-1"));
	298	SetHeader(wxT("Content-Type"), wxT("none/none"));
	299	RestoreState();
	300	return true;
	301	}
	302
	303	wxStringTokenizer token(tmp_str,wxT(' '));
	304	wxString tmp_str2;
	305	bool ret_value;
	306
	307	token.NextToken();
	308	tmp_str2 = token.NextToken();
	309
	310	m_http_response = wxAtoi(tmp_str2);
	311
	312	switch ( tmp_str2[0u].GetValue() )
	313	{
	314	case wxT('1'):
	315	/* INFORMATION / SUCCESS */
	316	break;
	317
	318	case wxT('2'):
	319	/* SUCCESS */
	320	break;
	321
	322	case wxT('3'):
	323	/* REDIRECTION */
	324	break;
	325
	326	default:
	327	m_perr = wxPROTO_NOFILE;
	328	RestoreState();
	329	return false;
	330	}
	331
	332	ret_value = ParseHeaders();
	333	RestoreState();
	334	return ret_value;
	335	}
	336
	337	class wxHTTPStream : public wxSocketInputStream
	338	{
	339	public:
	340	wxHTTP *m_http;
	341	size_t m_httpsize;
	342	unsigned long m_read_bytes;
	343
	344	wxHTTPStream(wxHTTP http) : wxSocketInputStream(http), m_http(http) {}
	345	size_t GetSize() const { return m_httpsize; }
	346	virtual ~wxHTTPStream(void) { m_http->Abort(); }
	347
	348	protected:
	349	size_t OnSysRead(void *buffer, size_t bufsize);
	350
	351	DECLARE_NO_COPY_CLASS(wxHTTPStream)
	352	};
	353
	354	size_t wxHTTPStream::OnSysRead(void *buffer, size_t bufsize)
	355	{
	356	if (m_httpsize > 0 && m_read_bytes >= m_httpsize)
	357	{
	358	m_lasterror = wxSTREAM_EOF;
	359	return 0;
	360	}
	361
	362	size_t ret = wxSocketInputStream::OnSysRead(buffer, bufsize);
	363	m_read_bytes += ret;
	364
	365	if (m_httpsize==(size_t)-1 && m_lasterror == wxSTREAM_READ_ERROR )
	366	{
	367	// if m_httpsize is (size_t) -1 this means read until connection closed
	368	// which is equivalent to getting a READ_ERROR, for clients however this
	369	// must be translated into EOF, as it is the expected way of signalling
	370	// end end of the content
	371	m_lasterror = wxSTREAM_EOF ;
	372	}
	373
	374	return ret;
	375	}
	376
	377	bool wxHTTP::Abort(void)
	378	{
	379	return wxSocketClient::Close();
	380	}
	381
	382	wxInputStream *wxHTTP::GetInputStream(const wxString& path)
	383	{
	384	wxHTTPStream *inp_stream;
	385
	386	wxString new_path;
	387
	388	m_perr = wxPROTO_CONNERR;
	389	if (!m_addr)
	390	return NULL;
	391
	392	// We set m_connected back to false so wxSocketBase will know what to do.
	393	#ifdef __WXMAC__
	394	wxSocketClient::Connect(*m_addr , false );
	395	wxSocketClient::WaitOnConnect(10);
	396
	397	if (!wxSocketClient::IsConnected())
	398	return NULL;
	399	#else
	400	if (!wxProtocol::Connect(*m_addr))
	401	return NULL;
	402	#endif
	403
	404	if (!BuildRequest(path, m_post_buf.empty() ? wxHTTP_GET : wxHTTP_POST))
	405	return NULL;
	406
	407	inp_stream = new wxHTTPStream(this);
	408
	409	if (!GetHeader(wxT("Content-Length")).empty())
	410	inp_stream->m_httpsize = wxAtoi(GetHeader(wxT("Content-Length")));
	411	else
	412	inp_stream->m_httpsize = (size_t)-1;
	413
	414	inp_stream->m_read_bytes = 0;
	415
	416	Notify(false);
	417	SetFlags(wxSOCKET_BLOCK \| wxSOCKET_WAITALL);
	418
	419	return inp_stream;
	420	}
	421
	422	#endif // wxUSE_PROTOCOL_HTTP