// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
-// $Id: http.cc,v 1.32 1999/05/26 04:08:39 jgg Exp $
+// $Id: http.cc,v 1.49 2001/02/23 07:19:49 jgg Exp $
/* ######################################################################
HTTP Aquire Method - This is the HTTP aquire method for APT.
It uses HTTP/1.1 and many of the fancy options there-in, such as
- pipelining, range, if-range and so on. It accepts on the command line
- a list of url destination pairs and writes to stdout the status of the
- operation as defined in the APT method spec.
-
- It is based on a doubly buffered select loop. All the requests are
+ pipelining, range, if-range and so on.
+
+ It is based on a doubly buffered select loop. A groupe of requests are
fed into a single output buffer that is constantly fed out the
socket. This provides ideal pipelining as in many cases all of the
requests will fit into a single packet. The input socket is buffered
- the same way and fed into the fd for the file.
+ the same way and fed into the fd for the file (may be a pipe in future).
This double buffering provides fairly substantial transfer rates,
compared to wget the http method is about 4% faster. Most importantly,
#include <errno.h>
// Internet stuff
-/*#include <netinet/in.h>
-#include <sys/socket.h>
-#include <arpa/inet.h>
-#include <netdb.h>*/
+#include <netdb.h>
+#include "connect.h"
#include "rfc2553emu.h"
#include "http.h"
time_t HttpMethod::FailTime = 0;
unsigned long PipelineDepth = 10;
unsigned long TimeOut = 120;
+bool Debug = false;
// CircleBuf::CircleBuf - Circular input buffer /*{{{*/
// ---------------------------------------------------------------------
// ServerState::Open - Open a connection to the server /*{{{*/
// ---------------------------------------------------------------------
/* This opens a connection to the server. */
-string LastHost;
-int LastPort = 0;
-struct addrinfo *LastHostAddr = 0;
bool ServerState::Open()
{
// Use the already open connection if possible.
Close();
In.Reset();
Out.Reset();
-
+ Persistent = true;
+
// Determine the proxy setting
if (getenv("http_proxy") == 0)
{
else
Proxy = getenv("http_proxy");
+ // Parse no_proxy, a , separated list of domains
+ if (getenv("no_proxy") != 0)
+ {
+ if (CheckDomainList(ServerName.Host,getenv("no_proxy")) == true)
+ Proxy = "";
+ }
+
// Determine what host and port to use based on the proxy settings
int Port = 0;
string Host;
- if (Proxy.empty() == true)
+ if (Proxy.empty() == true || Proxy.Host.empty() == true)
{
if (ServerName.Port != 0)
Port = ServerName.Port;
Host = Proxy.Host;
}
- /* We used a cached address record.. Yes this is against the spec but
- the way we have setup our rotating dns suggests that this is more
- sensible */
- if (LastHost != Host || LastPort != Port)
- {
- Owner->Status("Connecting to %s",Host.c_str());
-
- // Lookup the host
- char S[30] = "http";
- if (Port != 0)
- snprintf(S,sizeof(S),"%u",Port);
-
- // Free the old address structure
- if (LastHostAddr != 0)
- {
- freeaddrinfo(LastHostAddr);
- LastHostAddr = 0;
- }
-
- // We only understand SOCK_STREAM sockets.
- struct addrinfo Hints;
- memset(&Hints,0,sizeof(Hints));
- Hints.ai_socktype = SOCK_STREAM;
-
- // Resolve both the host and service simultaneously
- if (getaddrinfo(Host.c_str(),S,&Hints,&LastHostAddr) != 0 ||
- LastHostAddr == 0)
- return _error->Error("Could not resolve '%s'",Host.c_str());
-
- LastHost = Host;
- LastPort = Port;
- }
-
- // Get the printable IP address
- char Name[NI_MAXHOST];
- Name[0] = 0;
- getnameinfo(LastHostAddr->ai_addr,LastHostAddr->ai_addrlen,
- Name,sizeof(Name),0,0,NI_NUMERICHOST);
- Owner->Status("Connecting to %s (%s)",Host.c_str(),Name);
-
- // Get a socket
- if ((ServerFd = socket(LastHostAddr->ai_family,LastHostAddr->ai_socktype,
- LastHostAddr->ai_protocol)) < 0)
- return _error->Errno("socket","Could not create a socket");
- SetNonBlock(ServerFd,true);
- if (connect(ServerFd,LastHostAddr->ai_addr,LastHostAddr->ai_addrlen) < 0 &&
- errno != EINPROGRESS)
- return _error->Errno("connect","Connect initiate the connection");
-
- /* This implements a timeout for connect by opening the connection
- nonblocking */
- if (WaitFd(ServerFd,true,TimeOut) == false)
- return _error->Error("Could not connect, connection timed out");
- unsigned int Err;
- unsigned int Len = sizeof(Err);
- if (getsockopt(ServerFd,SOL_SOCKET,SO_ERROR,&Err,&Len) != 0)
- return _error->Errno("getsockopt","Failed");
- if (Err != 0)
- return _error->Error("Could not connect.");
+ // Connect to the remote server
+ if (Connect(Host,Port,"http",80,ServerFd,TimeOut,Owner) == false)
+ return false;
return true;
}
string Data;
if (In.WriteTillEl(Data) == false)
continue;
+
+ if (Debug == true)
+ clog << Data;
for (string::const_iterator I = Data.begin(); I < Data.end(); I++)
{
return 2;
I = J;
}
+
+ // 100 Continue is a Nop...
+ if (Result == 100)
+ continue;
+
+ // Tidy up the connection persistance state.
+ if (Encoding == Closes && HaveContent == true)
+ Persistent = false;
+
return 0;
}
while (Owner->Go(false,this) == true);
-
+
return 1;
}
/*}}}*/
if (sscanf(Line.c_str(),"HTTP %u %[^\n]",&Result,Code) != 2)
return _error->Error("The http server sent an invalid reply header");
}
-
+
+ /* Check the HTTP response header to get the default persistance
+ state. */
+ if (Major < 1)
+ Persistent = false;
+ else
+ {
+ if (Major == 1 && Minor <= 0)
+ Persistent = false;
+ else
+ Persistent = true;
+ }
+
return true;
}
{
HaveContent = true;
if (stringcasecmp(Val,"chunked") == 0)
- Encoding = Chunked;
-
+ Encoding = Chunked;
return true;
}
+ if (stringcasecmp(Tag,"Connection:") == 0)
+ {
+ if (stringcasecmp(Val,"close") == 0)
+ Persistent = false;
+ if (stringcasecmp(Val,"keep-alive") == 0)
+ Persistent = true;
+ return true;
+ }
+
if (stringcasecmp(Tag,"Last-Modified:") == 0)
{
if (StrToTime(Val,Date) == false)
if (stat(Itm->DestFile.c_str(),&SBuf) >= 0 && SBuf.st_size > 0)
{
// In this case we send an if-range query with a range header
- sprintf(Buf,"Range: bytes=%li-\r\nIf-Range: %s\r\n",SBuf.st_size - 1,
+ sprintf(Buf,"Range: bytes=%li-\r\nIf-Range: %s\r\n",(long)SBuf.st_size - 1,
TimeRFC1123(SBuf.st_mtime).c_str());
Req += Buf;
}
Req += string("Proxy-Authorization: Basic ") +
Base64Encode(Proxy.User + ":" + Proxy.Password) + "\r\n";
- Req += "User-Agent: Debian APT-HTTP/1.2\r\n\r\n";
-// cerr << Req << endl;
+ if (Uri.User.empty() == false || Uri.Password.empty() == false)
+ Req += string("Authorization: Basic ") +
+ Base64Encode(Uri.User + ":" + Uri.Password) + "\r\n";
+
+ Req += "User-Agent: Debian APT-HTTP/1.3\r\n\r\n";
+
+ if (Debug == true)
+ cerr << Req << endl;
Out.Read(Req);
}
bool HttpMethod::Go(bool ToFile,ServerState *Srv)
{
// Server has closed the connection
- if (Srv->ServerFd == -1 && Srv->In.WriteSpace() == false)
+ if (Srv->ServerFd == -1 && (Srv->In.WriteSpace() == false ||
+ ToFile == false))
return false;
- fd_set rfds,wfds,efds;
+ fd_set rfds,wfds;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
- FD_ZERO(&efds);
- // Add the server
- if (Srv->Out.WriteSpace() == true && Srv->ServerFd != -1)
+ /* Add the server. We only send more requests if the connection will
+ be persisting */
+ if (Srv->Out.WriteSpace() == true && Srv->ServerFd != -1
+ && Srv->Persistent == true)
FD_SET(Srv->ServerFd,&wfds);
- if (Srv->In.ReadSpace() == true && Srv->ServerFd != -1)
+ if (Srv->In.ReadSpace() == true && Srv->ServerFd != -1)
FD_SET(Srv->ServerFd,&rfds);
// Add the file
// Add stdin
FD_SET(STDIN_FILENO,&rfds);
- // Error Set
- if (FileFD != -1)
- FD_SET(FileFD,&efds);
- if (Srv->ServerFd != -1)
- FD_SET(Srv->ServerFd,&efds);
-
// Figure out the max fd
int MaxFd = FileFD;
if (MaxFd < Srv->ServerFd)
MaxFd = Srv->ServerFd;
-
+
// Select
struct timeval tv;
tv.tv_sec = TimeOut;
tv.tv_usec = 0;
int Res = 0;
- if ((Res = select(MaxFd+1,&rfds,&wfds,&efds,&tv)) < 0)
+ if ((Res = select(MaxFd+1,&rfds,&wfds,0,&tv)) < 0)
return _error->Errno("select","Select failed");
if (Res == 0)
return ServerDie(Srv);
}
- // Some kind of exception (error) on the sockets, die
- if ((FileFD != -1 && FD_ISSET(FileFD,&efds)) ||
- (Srv->ServerFd != -1 && FD_ISSET(Srv->ServerFd,&efds)))
- return _error->Error("Socket Exception");
-
// Handle server IO
if (Srv->ServerFd != -1 && FD_ISSET(Srv->ServerFd,&rfds))
{
// Handle commands from APT
if (FD_ISSET(STDIN_FILENO,&rfds))
{
- if (Run(true) != 0)
+ if (Run(true) != -1)
exit(100);
}
void HttpMethod::SigTerm(int)
{
if (FailFd == -1)
- exit(100);
+ _exit(100);
close(FailFd);
// Timestamp
UBuf.modtime = FailTime;
utime(FailFile.c_str(),&UBuf);
- exit(100);
+ _exit(100);
}
/*}}}*/
// HttpMethod::Fetch - Fetch an item /*{{{*/
// Queue the requests
int Depth = -1;
bool Tail = false;
- for (FetchItem *I = Queue; I != 0 && Depth < (signed)PipelineDepth; I = I->Next, Depth++)
+ for (FetchItem *I = Queue; I != 0 && Depth < (signed)PipelineDepth;
+ I = I->Next, Depth++)
{
+ // If pipelining is disabled, we only queue 1 request
+ if (Server->Pipeline == false && Depth >= 0)
+ break;
+
// Make sure we stick with the same server
if (Server->Comp(I->Uri) == false)
break;
QueueBack = I->Next;
SendReq(I,Server->Out);
continue;
- }
+ }
}
return true;
TimeOut = _config->FindI("Acquire::http::Timeout",TimeOut);
PipelineDepth = _config->FindI("Acquire::http::Pipeline-Depth",
PipelineDepth);
+ Debug = _config->FindB("Debug::Acquire::http",false);
return true;
}
return 0;
}
- // Run messages
- if (Run(true) != 0)
+ /* Run messages, we can accept 0 (no message) if we didn't
+ do a WaitFd above.. Otherwise the FD is closed. */
+ int Result = Run(true);
+ if (Result != -1 && (Result != 0 || Queue == 0))
return 100;
if (Queue == 0)
delete Server;
Server = new ServerState(Queue->Uri,this);
}
-
+
+ /* If the server has explicitly said this is the last connection
+ then we pre-emptively shut down the pipeline and tear down
+ the connection. This will speed up HTTP/1.0 servers a tad
+ since we don't have to wait for the close sequence to
+ complete */
+ if (Server->Persistent == false)
+ Server->Close();
+
// Reset the pipeline
if (Server->ServerFd == -1)
QueueBack = Queue;
{
_error->Error("Bad header Data");
Fail(true);
+ RotateDNS();
continue;
}
FailCounter++;
_error->Discard();
Server->Close();
-
+ Server->Pipeline = false;
+
if (FailCounter >= 2)
{
- Fail("Connection timed out",true);
+ Fail("Connection failed",true);
FailCounter = 0;
}
+ RotateDNS();
continue;
}
};
// Run the data
bool Result = Server->RunData();
+ /* If the server is sending back sizeless responses then fill in
+ the size now */
+ if (Res.Size == 0)
+ Res.Size = File->Size();
+
// Close the file, destroy the FD object and timestamp it
FailFd = -1;
delete File;
// Send status to APT
if (Result == true)
{
- Res.MD5Sum = Server->In.MD5->Result();
+ Res.MD5Sum = Server->In.MD5->Result();
URIDone(Res);
}
else
Fail(true);
-
+
break;
}
case 5:
{
Fail();
+ RotateDNS();
Server->Close();
break;
}
projects / apt.git / blobdiff