* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
+ * are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
*
***************************************************************************/
-#include "setup.h"
+#include "curl_setup.h"
-#ifdef HAVE_SYS_SOCKET_H
-#include <sys/socket.h>
-#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h> /* <netinet/tcp.h> may need it */
#endif
#ifdef HAVE_SYS_UN_H
#include <sys/un.h> /* for sockaddr_un */
#endif
-#ifdef HAVE_NETINET_TCP_H
-#include <netinet/tcp.h> /* for TCP_NODELAY */
+#ifdef HAVE_LINUX_TCP_H
+#include <linux/tcp.h>
+#elif defined(HAVE_NETINET_TCP_H)
+#include <netinet/tcp.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#include <inet.h>
#endif
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
-
#include "urldata.h"
#include "sendf.h"
#include "if2ip.h"
#include "strerror.h"
#include "connect.h"
-#include "curl_memory.h"
#include "select.h"
#include "url.h" /* for Curl_safefree() */
#include "multiif.h"
#include "sockaddr.h" /* required for Curl_sockaddr_storage */
#include "inet_ntop.h"
#include "inet_pton.h"
-#include "sslgen.h" /* for Curl_ssl_check_cxn() */
+#include "vtls/vtls.h" /* for Curl_ssl_check_cxn() */
#include "progress.h"
#include "warnless.h"
+#include "conncache.h"
+#include "multihandle.h"
+#include "system_win32.h"
-/* The last #include file should be: */
+/* The last 3 #include files should be in this order */
+#include "curl_printf.h"
+#include "curl_memory.h"
#include "memdebug.h"
#ifdef __SYMBIAN32__
static bool verifyconnect(curl_socket_t sockfd, int *error);
+#if defined(__DragonFly__) || defined(HAVE_WINSOCK_H)
+/* DragonFlyBSD and Windows use millisecond units */
+#define KEEPALIVE_FACTOR(x) (x *= 1000)
+#else
+#define KEEPALIVE_FACTOR(x)
+#endif
+
+#if defined(HAVE_WINSOCK2_H) && !defined(SIO_KEEPALIVE_VALS)
+#define SIO_KEEPALIVE_VALS _WSAIOW(IOC_VENDOR,4)
+
+struct tcp_keepalive {
+ u_long onoff;
+ u_long keepalivetime;
+ u_long keepaliveinterval;
+};
+#endif
+
+static void
+tcpkeepalive(struct Curl_easy *data,
+ curl_socket_t sockfd)
+{
+ int optval = data->set.tcp_keepalive?1:0;
+
+ /* only set IDLE and INTVL if setting KEEPALIVE is successful */
+ if(setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE,
+ (void *)&optval, sizeof(optval)) < 0) {
+ infof(data, "Failed to set SO_KEEPALIVE on fd %d\n", sockfd);
+ }
+ else {
+#if defined(SIO_KEEPALIVE_VALS)
+ struct tcp_keepalive vals;
+ DWORD dummy;
+ vals.onoff = 1;
+ optval = curlx_sltosi(data->set.tcp_keepidle);
+ KEEPALIVE_FACTOR(optval);
+ vals.keepalivetime = optval;
+ optval = curlx_sltosi(data->set.tcp_keepintvl);
+ KEEPALIVE_FACTOR(optval);
+ vals.keepaliveinterval = optval;
+ if(WSAIoctl(sockfd, SIO_KEEPALIVE_VALS, (LPVOID) &vals, sizeof(vals),
+ NULL, 0, &dummy, NULL, NULL) != 0) {
+ infof(data, "Failed to set SIO_KEEPALIVE_VALS on fd %d: %d\n",
+ (int)sockfd, WSAGetLastError());
+ }
+#else
+#ifdef TCP_KEEPIDLE
+ optval = curlx_sltosi(data->set.tcp_keepidle);
+ KEEPALIVE_FACTOR(optval);
+ if(setsockopt(sockfd, IPPROTO_TCP, TCP_KEEPIDLE,
+ (void *)&optval, sizeof(optval)) < 0) {
+ infof(data, "Failed to set TCP_KEEPIDLE on fd %d\n", sockfd);
+ }
+#endif
+#ifdef TCP_KEEPINTVL
+ optval = curlx_sltosi(data->set.tcp_keepintvl);
+ KEEPALIVE_FACTOR(optval);
+ if(setsockopt(sockfd, IPPROTO_TCP, TCP_KEEPINTVL,
+ (void *)&optval, sizeof(optval)) < 0) {
+ infof(data, "Failed to set TCP_KEEPINTVL on fd %d\n", sockfd);
+ }
+#endif
+#ifdef TCP_KEEPALIVE
+ /* Mac OS X style */
+ optval = curlx_sltosi(data->set.tcp_keepidle);
+ KEEPALIVE_FACTOR(optval);
+ if(setsockopt(sockfd, IPPROTO_TCP, TCP_KEEPALIVE,
+ (void *)&optval, sizeof(optval)) < 0) {
+ infof(data, "Failed to set TCP_KEEPALIVE on fd %d\n", sockfd);
+ }
+#endif
+#endif
+ }
+}
+
static CURLcode
singleipconnect(struct connectdata *conn,
const Curl_addrinfo *ai, /* start connecting to this */
- long timeout_ms,
- curl_socket_t *sock,
- bool *connected);
+ curl_socket_t *sock);
/*
* Curl_timeleft() returns the amount of milliseconds left allowed for the
*
* @unittest: 1303
*/
-long Curl_timeleft(struct SessionHandle *data,
- struct timeval *nowp,
- bool duringconnect)
+timediff_t Curl_timeleft(struct Curl_easy *data,
+ struct curltime *nowp,
+ bool duringconnect)
{
int timeout_set = 0;
- long timeout_ms = duringconnect?DEFAULT_CONNECT_TIMEOUT:0;
- struct timeval now;
+ timediff_t timeout_ms = duringconnect?DEFAULT_CONNECT_TIMEOUT:0;
+ struct curltime now;
/* if a timeout is set, use the most restrictive one */
if(duringconnect && (data->set.connecttimeout > 0))
timeout_set |= 2;
- switch (timeout_set) {
+ switch(timeout_set) {
case 1:
timeout_ms = data->set.timeout;
break;
}
if(!nowp) {
- now = Curl_tvnow();
+ now = Curl_now();
nowp = &now;
}
/* subtract elapsed time */
- timeout_ms -= Curl_tvdiff(*nowp, data->progress.t_startsingle);
+ if(duringconnect)
+ /* since this most recent connect started */
+ timeout_ms -= Curl_timediff(*nowp, data->progress.t_startsingle);
+ else
+ /* since the entire operation started */
+ timeout_ms -= Curl_timediff(*nowp, data->progress.t_startop);
if(!timeout_ms)
/* avoid returning 0 as that means no timeout! */
return -1;
return timeout_ms;
}
-/*
- * waitconnect() waits for a TCP connect on the given socket for the specified
- * number if milliseconds. It returns:
- */
-
-#define WAITCONN_CONNECTED 0
-#define WAITCONN_SELECT_ERROR -1
-#define WAITCONN_TIMEOUT 1
-#define WAITCONN_FDSET_ERROR 2
-#define WAITCONN_ABORTED 3
-
-static
-int waitconnect(struct connectdata *conn,
- curl_socket_t sockfd, /* socket */
- long timeout_msec)
-{
- int rc;
-#ifdef mpeix
- /* Call this function once now, and ignore the results. We do this to
- "clear" the error state on the socket so that we can later read it
- reliably. This is reported necessary on the MPE/iX operating system. */
- (void)verifyconnect(sockfd, NULL);
-#endif
-
- for(;;) {
-
- /* now select() until we get connect or timeout */
- rc = Curl_socket_ready(CURL_SOCKET_BAD, sockfd, timeout_msec>1000?
- 1000:timeout_msec);
- if(Curl_pgrsUpdate(conn))
- return WAITCONN_ABORTED;
-
- if(-1 == rc)
- /* error, no connect here, try next */
- return WAITCONN_SELECT_ERROR;
-
- else if(0 == rc) {
- /* timeout */
- timeout_msec -= 1000;
- if(timeout_msec <= 0)
- return WAITCONN_TIMEOUT;
-
- continue;
- }
-
- if(rc & CURL_CSELECT_ERR)
- /* error condition caught */
- return WAITCONN_FDSET_ERROR;
-
- break;
- }
- return WAITCONN_CONNECTED;
-}
-
static CURLcode bindlocal(struct connectdata *conn,
- curl_socket_t sockfd, int af)
+ curl_socket_t sockfd, int af, unsigned int scope)
{
- struct SessionHandle *data = conn->data;
+ struct Curl_easy *data = conn->data;
struct Curl_sockaddr_storage sa;
struct sockaddr *sock = (struct sockaddr *)&sa; /* bind to this address */
struct sockaddr_in6 *si6 = (struct sockaddr_in6 *)&sa;
#endif
- struct Curl_dns_entry *h=NULL;
+ struct Curl_dns_entry *h = NULL;
unsigned short port = data->set.localport; /* use this port number, 0 for
"random" */
/* how many port numbers to try to bind to, increasing one at a time */
int portnum = data->set.localportrange;
const char *dev = data->set.str[STRING_DEVICE];
int error;
- char myhost[256] = "";
- int done = 0; /* -1 for error, 1 for address found */
- bool is_interface = FALSE;
- bool is_host = FALSE;
- static const char *if_prefix = "if!";
- static const char *host_prefix = "host!";
/*************************************************************
* Select device to bind socket to
memset(&sa, 0, sizeof(struct Curl_sockaddr_storage));
if(dev && (strlen(dev)<255) ) {
+ char myhost[256] = "";
+ int done = 0; /* -1 for error, 1 for address found */
+ bool is_interface = FALSE;
+ bool is_host = FALSE;
+ static const char *if_prefix = "if!";
+ static const char *host_prefix = "host!";
+
if(strncmp(if_prefix, dev, strlen(if_prefix)) == 0) {
dev += strlen(if_prefix);
is_interface = TRUE;
}
/* interface */
- if(!is_host && (is_interface || Curl_if_is_interface_name(dev))) {
- if(Curl_if2ip(af, dev, myhost, sizeof(myhost)) == NULL)
- return CURLE_INTERFACE_FAILED;
-
- /*
- * We now have the numerical IP address in the 'myhost' buffer
- */
- infof(data, "Local Interface %s is ip %s using address family %i\n",
- dev, myhost, af);
- done = 1;
-
+ if(!is_host) {
#ifdef SO_BINDTODEVICE
- /* I am not sure any other OSs than Linux that provide this feature, and
- * at the least I cannot test. --Ben
+ /* I am not sure any other OSs than Linux that provide this feature,
+ * and at the least I cannot test. --Ben
*
* This feature allows one to tightly bind the local socket to a
- * particular interface. This will force even requests to other local
- * interfaces to go out the external interface.
+ * particular interface. This will force even requests to other
+ * local interfaces to go out the external interface.
*
*
- * Only bind to the interface when specified as interface, not just as a
- * hostname or ip address.
+ * Only bind to the interface when specified as interface, not just
+ * as a hostname or ip address.
+ *
+ * interface might be a VRF, eg: vrf-blue, which means it cannot be
+ * converted to an IP address and would fail Curl_if2ip. Simply try
+ * to use it straight away.
*/
if(setsockopt(sockfd, SOL_SOCKET, SO_BINDTODEVICE,
- dev, (curl_socklen_t)strlen(dev)+1) != 0) {
- error = SOCKERRNO;
- infof(data, "SO_BINDTODEVICE %s failed with errno %d: %s;"
- " will do regular bind\n",
- dev, error, Curl_strerror(conn, error));
+ dev, (curl_socklen_t)strlen(dev) + 1) == 0) {
/* This is typically "errno 1, error: Operation not permitted" if
- you're not running as root or another suitable privileged user */
+ * you're not running as root or another suitable privileged
+ * user.
+ * If it succeeds it means the parameter was a valid interface and
+ * not an IP address. Return immediately.
+ */
+ return CURLE_OK;
}
#endif
+
+ switch(Curl_if2ip(af, scope, conn->scope_id, dev,
+ myhost, sizeof(myhost))) {
+ case IF2IP_NOT_FOUND:
+ if(is_interface) {
+ /* Do not fall back to treating it as a host name */
+ failf(data, "Couldn't bind to interface '%s'", dev);
+ return CURLE_INTERFACE_FAILED;
+ }
+ break;
+ case IF2IP_AF_NOT_SUPPORTED:
+ /* Signal the caller to try another address family if available */
+ return CURLE_UNSUPPORTED_PROTOCOL;
+ case IF2IP_FOUND:
+ is_interface = TRUE;
+ /*
+ * We now have the numerical IP address in the 'myhost' buffer
+ */
+ infof(data, "Local Interface %s is ip %s using address family %i\n",
+ dev, myhost, af);
+ done = 1;
+ break;
+ }
}
- else {
+ if(!is_interface) {
/*
* This was not an interface, resolve the name as a host name
* or IP number
if(done > 0) {
#ifdef ENABLE_IPV6
- /* ipv6 address */
- if((af == AF_INET6) &&
- (Curl_inet_pton(AF_INET6, myhost, &si6->sin6_addr) > 0)) {
- si6->sin6_family = AF_INET6;
- si6->sin6_port = htons(port);
+ /* IPv6 address */
+ if(af == AF_INET6) {
+#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
+ char *scope_ptr = strchr(myhost, '%');
+ if(scope_ptr)
+ *(scope_ptr++) = 0;
+#endif
+ if(Curl_inet_pton(AF_INET6, myhost, &si6->sin6_addr) > 0) {
+ si6->sin6_family = AF_INET6;
+ si6->sin6_port = htons(port);
+#ifdef HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID
+ if(scope_ptr)
+ /* The "myhost" string either comes from Curl_if2ip or from
+ Curl_printable_address. The latter returns only numeric scope
+ IDs and the former returns none at all. So the scope ID, if
+ present, is known to be numeric */
+ si6->sin6_scope_id = atoi(scope_ptr);
+#endif
+ }
sizeof_sa = sizeof(struct sockaddr_in6);
}
else
#endif
- /* ipv4 address */
+ /* IPv4 address */
if((af == AF_INET) &&
(Curl_inet_pton(AF_INET, myhost, &si4->sin_addr) > 0)) {
si4->sin_family = AF_INET;
}
if(done < 1) {
+ /* errorbuf is set false so failf will overwrite any message already in
+ the error buffer, so the user receives this error message instead of a
+ generic resolve error. */
+ data->state.errorbuf = FALSE;
failf(data, "Couldn't bind to '%s'", dev);
return CURLE_INTERFACE_FAILED;
}
more address exists or error */
static CURLcode trynextip(struct connectdata *conn,
int sockindex,
- bool *connected)
+ int tempindex)
{
- curl_socket_t sockfd;
- Curl_addrinfo *ai;
+ const int other = tempindex ^ 1;
+ CURLcode result = CURLE_COULDNT_CONNECT;
/* First clean up after the failed socket.
Don't close it yet to ensure that the next IP's socket gets a different
file descriptor, which can prevent bugs when the curl_multi_socket_action
interface is used with certain select() replacements such as kqueue. */
- curl_socket_t fd_to_close = conn->sock[sockindex];
- conn->sock[sockindex] = CURL_SOCKET_BAD;
- *connected = FALSE;
+ curl_socket_t fd_to_close = conn->tempsock[tempindex];
+ conn->tempsock[tempindex] = CURL_SOCKET_BAD;
- if(sockindex != FIRSTSOCKET) {
- Curl_closesocket(conn, fd_to_close);
- return CURLE_COULDNT_CONNECT; /* no next */
- }
+ if(sockindex == FIRSTSOCKET) {
+ Curl_addrinfo *ai = NULL;
+ int family = AF_UNSPEC;
- /* try the next address */
- ai = conn->ip_addr->ai_next;
-
- while(ai) {
- CURLcode res = singleipconnect(conn, ai, 0L, &sockfd, connected);
- if(res)
- return res;
- if(sockfd != CURL_SOCKET_BAD) {
- /* store the new socket descriptor */
- conn->sock[sockindex] = sockfd;
- conn->ip_addr = ai;
- Curl_closesocket(conn, fd_to_close);
- return CURLE_OK;
+ if(conn->tempaddr[tempindex]) {
+ /* find next address in the same protocol family */
+ family = conn->tempaddr[tempindex]->ai_family;
+ ai = conn->tempaddr[tempindex]->ai_next;
+ }
+#ifdef ENABLE_IPV6
+ else if(conn->tempaddr[0]) {
+ /* happy eyeballs - try the other protocol family */
+ int firstfamily = conn->tempaddr[0]->ai_family;
+ family = (firstfamily == AF_INET) ? AF_INET6 : AF_INET;
+ ai = conn->tempaddr[0]->ai_next;
+ }
+#endif
+
+ while(ai) {
+ if(conn->tempaddr[other]) {
+ /* we can safely skip addresses of the other protocol family */
+ while(ai && ai->ai_family != family)
+ ai = ai->ai_next;
+ }
+
+ if(ai) {
+ result = singleipconnect(conn, ai, &conn->tempsock[tempindex]);
+ if(result == CURLE_COULDNT_CONNECT) {
+ ai = ai->ai_next;
+ continue;
+ }
+
+ conn->tempaddr[tempindex] = ai;
+ }
+ break;
}
- ai = ai->ai_next;
}
- Curl_closesocket(conn, fd_to_close);
- return CURLE_COULDNT_CONNECT;
+
+ if(fd_to_close != CURL_SOCKET_BAD)
+ Curl_closesocket(conn, fd_to_close);
+
+ return result;
}
/* Copies connection info into the session handle to make it available
{
memcpy(conn->data->info.conn_primary_ip, conn->primary_ip, MAX_IPADR_LEN);
memcpy(conn->data->info.conn_local_ip, conn->local_ip, MAX_IPADR_LEN);
+ conn->data->info.conn_scheme = conn->handler->scheme;
+ conn->data->info.conn_protocol = conn->handler->protocol;
conn->data->info.conn_primary_port = conn->primary_port;
conn->data->info.conn_local_port = conn->local_port;
}
-/* retrieves ip address and port from a sockaddr structure */
-static bool getaddressinfo(struct sockaddr* sa, char* addr,
- long* port)
+/* retrieves ip address and port from a sockaddr structure.
+ note it calls Curl_inet_ntop which sets errno on fail, not SOCKERRNO. */
+bool Curl_getaddressinfo(struct sockaddr *sa, char *addr,
+ long *port)
{
unsigned short us_port;
- struct sockaddr_in* si = NULL;
+ struct sockaddr_in *si = NULL;
#ifdef ENABLE_IPV6
- struct sockaddr_in6* si6 = NULL;
+ struct sockaddr_in6 *si6 = NULL;
#endif
#if defined(HAVE_SYS_UN_H) && defined(AF_UNIX)
- struct sockaddr_un* su = NULL;
+ struct sockaddr_un *su = NULL;
#endif
- switch (sa->sa_family) {
+ switch(sa->sa_family) {
case AF_INET:
- si = (struct sockaddr_in*) sa;
+ si = (struct sockaddr_in *)(void *) sa;
if(Curl_inet_ntop(sa->sa_family, &si->sin_addr,
addr, MAX_IPADR_LEN)) {
us_port = ntohs(si->sin_port);
break;
#ifdef ENABLE_IPV6
case AF_INET6:
- si6 = (struct sockaddr_in6*)sa;
+ si6 = (struct sockaddr_in6 *)(void *) sa;
if(Curl_inet_ntop(sa->sa_family, &si6->sin6_addr,
addr, MAX_IPADR_LEN)) {
us_port = ntohs(si6->sin6_port);
addr[0] = '\0';
*port = 0;
-
+ errno = EAFNOSUPPORT;
return FALSE;
}
connection */
void Curl_updateconninfo(struct connectdata *conn, curl_socket_t sockfd)
{
- int error;
curl_socklen_t len;
struct Curl_sockaddr_storage ssrem;
struct Curl_sockaddr_storage ssloc;
- struct SessionHandle *data = conn->data;
+ struct Curl_easy *data = conn->data;
- if(!conn->bits.reuse) {
+ if(conn->socktype == SOCK_DGRAM)
+ /* there's no connection! */
+ return;
+ if(!conn->bits.reuse && !conn->bits.tcp_fastopen) {
len = sizeof(struct Curl_sockaddr_storage);
if(getpeername(sockfd, (struct sockaddr*) &ssrem, &len)) {
- error = SOCKERRNO;
+ int error = SOCKERRNO;
failf(data, "getpeername() failed with errno %d: %s",
error, Curl_strerror(conn, error));
return;
}
len = sizeof(struct Curl_sockaddr_storage);
+ memset(&ssloc, 0, sizeof(ssloc));
if(getsockname(sockfd, (struct sockaddr*) &ssloc, &len)) {
- error = SOCKERRNO;
+ int error = SOCKERRNO;
failf(data, "getsockname() failed with errno %d: %s",
error, Curl_strerror(conn, error));
return;
}
- if(!getaddressinfo((struct sockaddr*)&ssrem,
- conn->primary_ip, &conn->primary_port)) {
- error = ERRNO;
+ if(!Curl_getaddressinfo((struct sockaddr*)&ssrem,
+ conn->primary_ip, &conn->primary_port)) {
failf(data, "ssrem inet_ntop() failed with errno %d: %s",
- error, Curl_strerror(conn, error));
+ errno, Curl_strerror(conn, errno));
return;
}
+ memcpy(conn->ip_addr_str, conn->primary_ip, MAX_IPADR_LEN);
- if(!getaddressinfo((struct sockaddr*)&ssloc,
- conn->local_ip, &conn->local_port)) {
- error = ERRNO;
+ if(!Curl_getaddressinfo((struct sockaddr*)&ssloc,
+ conn->local_ip, &conn->local_port)) {
failf(data, "ssloc inet_ntop() failed with errno %d: %s",
- error, Curl_strerror(conn, error));
+ errno, Curl_strerror(conn, errno));
return;
}
}
/*
- * Curl_is_connected() is used from the multi interface to check if the
- * firstsocket has connected.
+ * Curl_is_connected() checks if the socket has connected.
*/
CURLcode Curl_is_connected(struct connectdata *conn,
int sockindex,
bool *connected)
{
- int rc;
- struct SessionHandle *data = conn->data;
- CURLcode code = CURLE_OK;
- curl_socket_t sockfd = conn->sock[sockindex];
- long allow = DEFAULT_CONNECT_TIMEOUT;
+ struct Curl_easy *data = conn->data;
+ CURLcode result = CURLE_OK;
+ timediff_t allow;
int error = 0;
- struct timeval now;
+ struct curltime now;
+ int rc;
+ int i;
DEBUGASSERT(sockindex >= FIRSTSOCKET && sockindex <= SECONDARYSOCKET);
return CURLE_OK;
}
- now = Curl_tvnow();
+ now = Curl_now();
/* figure out how long time we have left to connect */
allow = Curl_timeleft(data, &now, TRUE);
return CURLE_OPERATION_TIMEDOUT;
}
- /* check for connect without timeout as we want to return immediately */
- rc = waitconnect(conn, sockfd, 0);
- if(WAITCONN_TIMEOUT == rc) {
- if(curlx_tvdiff(now, conn->connecttime) >= conn->timeoutms_per_addr) {
- infof(data, "After %ldms connect time, move on!\n",
- conn->timeoutms_per_addr);
- goto next;
+ for(i = 0; i<2; i++) {
+ const int other = i ^ 1;
+ if(conn->tempsock[i] == CURL_SOCKET_BAD)
+ continue;
+
+#ifdef mpeix
+ /* Call this function once now, and ignore the results. We do this to
+ "clear" the error state on the socket so that we can later read it
+ reliably. This is reported necessary on the MPE/iX operating system. */
+ (void)verifyconnect(conn->tempsock[i], NULL);
+#endif
+
+ /* check socket for connect */
+ rc = SOCKET_WRITABLE(conn->tempsock[i], 0);
+
+ if(rc == 0) { /* no connection yet */
+ error = 0;
+ if(Curl_timediff(now, conn->connecttime) >= conn->timeoutms_per_addr) {
+ infof(data, "After %ldms connect time, move on!\n",
+ conn->timeoutms_per_addr);
+ error = ETIMEDOUT;
+ }
+
+ /* should we try another protocol family? */
+ if(i == 0 && conn->tempaddr[1] == NULL &&
+ (Curl_timediff(now, conn->connecttime) >=
+ data->set.happy_eyeballs_timeout)) {
+ trynextip(conn, sockindex, 1);
+ }
}
+ else if(rc == CURL_CSELECT_OUT || conn->bits.tcp_fastopen) {
+ if(verifyconnect(conn->tempsock[i], &error)) {
+ /* we are connected with TCP, awesome! */
+
+ /* use this socket from now on */
+ conn->sock[sockindex] = conn->tempsock[i];
+ conn->ip_addr = conn->tempaddr[i];
+ conn->tempsock[i] = CURL_SOCKET_BAD;
+#ifdef ENABLE_IPV6
+ conn->bits.ipv6 = (conn->ip_addr->ai_family == AF_INET6)?TRUE:FALSE;
+#endif
- /* not an error, but also no connection yet */
- return code;
- }
+ /* close the other socket, if open */
+ if(conn->tempsock[other] != CURL_SOCKET_BAD) {
+ Curl_closesocket(conn, conn->tempsock[other]);
+ conn->tempsock[other] = CURL_SOCKET_BAD;
+ }
- if(WAITCONN_CONNECTED == rc) {
- if(verifyconnect(sockfd, &error)) {
- /* we are connected with TCP, awesome! */
+ /* see if we need to do any proxy magic first once we connected */
+ result = Curl_connected_proxy(conn, sockindex);
+ if(result)
+ return result;
- /* see if we need to do any proxy magic first once we connected */
- code = Curl_connected_proxy(conn);
- if(code)
- return code;
+ conn->bits.tcpconnect[sockindex] = TRUE;
- conn->bits.tcpconnect[sockindex] = TRUE;
- *connected = TRUE;
- if(sockindex == FIRSTSOCKET)
- Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */
- Curl_verboseconnect(conn);
- Curl_updateconninfo(conn, sockfd);
+ *connected = TRUE;
+ if(sockindex == FIRSTSOCKET)
+ Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */
+ Curl_updateconninfo(conn, conn->sock[sockindex]);
+ Curl_verboseconnect(conn);
- return CURLE_OK;
+ return CURLE_OK;
+ }
+ infof(data, "Connection failed\n");
}
- /* nope, not connected for real */
- }
- else {
- /* nope, not connected */
- if(WAITCONN_FDSET_ERROR == rc) {
- (void)verifyconnect(sockfd, &error);
- infof(data, "%s\n",Curl_strerror(conn, error));
+ else if(rc & CURL_CSELECT_ERR)
+ (void)verifyconnect(conn->tempsock[i], &error);
+
+ /*
+ * The connection failed here, we should attempt to connect to the "next
+ * address" for the given host. But first remember the latest error.
+ */
+ if(error) {
+ data->state.os_errno = error;
+ SET_SOCKERRNO(error);
+ if(conn->tempaddr[i]) {
+ CURLcode status;
+ char ipaddress[MAX_IPADR_LEN];
+ Curl_printable_address(conn->tempaddr[i], ipaddress, MAX_IPADR_LEN);
+ infof(data, "connect to %s port %ld failed: %s\n",
+ ipaddress, conn->port, Curl_strerror(conn, error));
+
+ conn->timeoutms_per_addr = conn->tempaddr[i]->ai_next == NULL ?
+ allow : allow / 2;
+
+ status = trynextip(conn, sockindex, i);
+ if(status != CURLE_COULDNT_CONNECT
+ || conn->tempsock[other] == CURL_SOCKET_BAD)
+ /* the last attempt failed and no other sockets remain open */
+ result = status;
+ }
}
- else
- infof(data, "Connection failed\n");
}
- /*
- * The connection failed here, we should attempt to connect to the "next
- * address" for the given host. But first remember the latest error.
- */
- if(error) {
- data->state.os_errno = error;
- SET_SOCKERRNO(error);
- }
- next:
+ if(result) {
+ /* no more addresses to try */
+
+ const char *hostname;
- code = trynextip(conn, sockindex, connected);
+ /* if the first address family runs out of addresses to try before
+ the happy eyeball timeout, go ahead and try the next family now */
+ if(conn->tempaddr[1] == NULL) {
+ result = trynextip(conn, sockindex, 1);
+ if(!result)
+ return result;
+ }
- if(code) {
- error = SOCKERRNO;
- data->state.os_errno = error;
- failf(data, "Failed connect to %s:%ld; %s",
- conn->host.name, conn->port, Curl_strerror(conn, error));
+ if(conn->bits.socksproxy)
+ hostname = conn->socks_proxy.host.name;
+ else if(conn->bits.httpproxy)
+ hostname = conn->http_proxy.host.name;
+ else if(conn->bits.conn_to_host)
+ hostname = conn->conn_to_host.name;
+ else
+ hostname = conn->host.name;
+
+ failf(data, "Failed to connect to %s port %ld: %s",
+ hostname, conn->port, Curl_strerror(conn, error));
}
- return code;
+ return result;
}
-static void tcpnodelay(struct connectdata *conn,
- curl_socket_t sockfd)
+void Curl_tcpnodelay(struct connectdata *conn, curl_socket_t sockfd)
{
-#ifdef TCP_NODELAY
- struct SessionHandle *data= conn->data;
- curl_socklen_t onoff = (curl_socklen_t) data->set.tcp_nodelay;
+#if defined(TCP_NODELAY)
+#if !defined(CURL_DISABLE_VERBOSE_STRINGS)
+ struct Curl_easy *data = conn->data;
+#endif
+ curl_socklen_t onoff = (curl_socklen_t) 1;
int level = IPPROTO_TCP;
-#if 0
- /* The use of getprotobyname() is disabled since it isn't thread-safe on
- numerous systems. On these getprotobyname_r() should be used instead, but
- that exists in at least one 4 arg version and one 5 arg version, and
- since the proto number rarely changes anyway we now just use the hard
- coded number. The "proper" fix would need a configure check for the
- correct function much in the same style the gethostbyname_r versions are
- detected. */
- struct protoent *pe = getprotobyname("tcp");
- if(pe)
- level = pe->p_proto;
+#if defined(CURL_DISABLE_VERBOSE_STRINGS)
+ (void) conn;
#endif
if(setsockopt(sockfd, level, TCP_NODELAY, (void *)&onoff,
infof(data, "Could not set TCP_NODELAY: %s\n",
Curl_strerror(conn, SOCKERRNO));
else
- infof(data,"TCP_NODELAY set\n");
+ infof(data, "TCP_NODELAY set\n");
#else
(void)conn;
(void)sockfd;
static void nosigpipe(struct connectdata *conn,
curl_socket_t sockfd)
{
- struct SessionHandle *data= conn->data;
+ struct Curl_easy *data = conn->data;
int onoff = 1;
if(setsockopt(sockfd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&onoff,
sizeof(onoff)) < 0)
/* When you run a program that uses the Windows Sockets API, you may
experience slow performance when you copy data to a TCP server.
- http://support.microsoft.com/kb/823764
+ https://support.microsoft.com/kb/823764
Work-around: Make the Socket Send Buffer Size Larger Than the Program Send
Buffer Size
+ The problem described in this knowledge-base is applied only to pre-Vista
+ Windows. Following function trying to detect OS version and skips
+ SO_SNDBUF adjustment for Windows Vista and above.
*/
+#define DETECT_OS_NONE 0
+#define DETECT_OS_PREVISTA 1
+#define DETECT_OS_VISTA_OR_LATER 2
+
void Curl_sndbufset(curl_socket_t sockfd)
{
int val = CURL_MAX_WRITE_SIZE + 32;
int curval = 0;
int curlen = sizeof(curval);
+ static int detectOsState = DETECT_OS_NONE;
+
+ if(detectOsState == DETECT_OS_NONE) {
+ if(Curl_verify_windows_version(6, 0, PLATFORM_WINNT,
+ VERSION_GREATER_THAN_EQUAL))
+ detectOsState = DETECT_OS_VISTA_OR_LATER;
+ else
+ detectOsState = DETECT_OS_PREVISTA;
+ }
+
+ if(detectOsState == DETECT_OS_VISTA_OR_LATER)
+ return;
+
if(getsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, (char *)&curval, &curlen) == 0)
if(curval > val)
return;
}
#endif
-
/*
* singleipconnect()
*
* CURL_SOCKET_BAD. Other errors will however return proper errors.
*
* singleipconnect() connects to the given IP only, and it may return without
- * having connected if used from the multi interface.
+ * having connected.
*/
-static CURLcode
-singleipconnect(struct connectdata *conn,
- const Curl_addrinfo *ai,
- long timeout_ms,
- curl_socket_t *sockp,
- bool *connected)
+static CURLcode singleipconnect(struct connectdata *conn,
+ const Curl_addrinfo *ai,
+ curl_socket_t *sockp)
{
struct Curl_sockaddr_ex addr;
- int rc;
+ int rc = -1;
int error = 0;
bool isconnected = FALSE;
- struct SessionHandle *data = conn->data;
+ struct Curl_easy *data = conn->data;
curl_socket_t sockfd;
- CURLcode res = CURLE_OK;
+ CURLcode result;
+ char ipaddress[MAX_IPADR_LEN];
+ long port;
+ bool is_tcp;
+#ifdef TCP_FASTOPEN_CONNECT
+ int optval = 1;
+#endif
*sockp = CURL_SOCKET_BAD;
- *connected = FALSE; /* default is not connected */
- res = Curl_socket(conn, ai, &addr, &sockfd);
- if(res)
- return res;
+ result = Curl_socket(conn, ai, &addr, &sockfd);
+ if(result)
+ /* Failed to create the socket, but still return OK since we signal the
+ lack of socket as well. This allows the parent function to keep looping
+ over alternative addresses/socket families etc. */
+ return CURLE_OK;
/* store remote address and port used in this connection attempt */
- if(!getaddressinfo((struct sockaddr*)&addr.sa_addr,
- conn->primary_ip, &conn->primary_port)) {
+ if(!Curl_getaddressinfo((struct sockaddr*)&addr.sa_addr,
+ ipaddress, &port)) {
/* malformed address or bug in inet_ntop, try next address */
- error = ERRNO;
failf(data, "sa_addr inet_ntop() failed with errno %d: %s",
- error, Curl_strerror(conn, error));
+ errno, Curl_strerror(conn, errno));
Curl_closesocket(conn, sockfd);
return CURLE_OK;
}
- memcpy(conn->ip_addr_str, conn->primary_ip, MAX_IPADR_LEN);
- infof(data, " Trying %s...\n", conn->ip_addr_str);
-
- Curl_persistconninfo(conn);
+ infof(data, " Trying %s...\n", ipaddress);
- if(data->set.tcp_nodelay)
- tcpnodelay(conn, sockfd);
+#ifdef ENABLE_IPV6
+ is_tcp = (addr.family == AF_INET || addr.family == AF_INET6) &&
+ addr.socktype == SOCK_STREAM;
+#else
+ is_tcp = (addr.family == AF_INET) && addr.socktype == SOCK_STREAM;
+#endif
+ if(is_tcp && data->set.tcp_nodelay)
+ Curl_tcpnodelay(conn, sockfd);
nosigpipe(conn, sockfd);
Curl_sndbufset(sockfd);
+ if(is_tcp && data->set.tcp_keepalive)
+ tcpkeepalive(data, sockfd);
+
if(data->set.fsockopt) {
/* activate callback for setting socket options */
+ Curl_set_in_callback(data, true);
error = data->set.fsockopt(data->set.sockopt_client,
sockfd,
CURLSOCKTYPE_IPCXN);
+ Curl_set_in_callback(data, false);
if(error == CURL_SOCKOPT_ALREADY_CONNECTED)
isconnected = TRUE;
}
/* possibly bind the local end to an IP, interface or port */
- res = bindlocal(conn, sockfd, addr.family);
- if(res) {
- Curl_closesocket(conn, sockfd); /* close socket and bail out */
- return res;
+ if(addr.family == AF_INET
+#ifdef ENABLE_IPV6
+ || addr.family == AF_INET6
+#endif
+ ) {
+ result = bindlocal(conn, sockfd, addr.family,
+ Curl_ipv6_scope((struct sockaddr*)&addr.sa_addr));
+ if(result) {
+ Curl_closesocket(conn, sockfd); /* close socket and bail out */
+ if(result == CURLE_UNSUPPORTED_PROTOCOL) {
+ /* The address family is not supported on this interface.
+ We can continue trying addresses */
+ return CURLE_COULDNT_CONNECT;
+ }
+ return result;
+ }
}
/* set socket non-blocking */
- curlx_nonblock(sockfd, TRUE);
+ (void)curlx_nonblock(sockfd, TRUE);
+
+ conn->connecttime = Curl_now();
+ if(conn->num_addr > 1)
+ Curl_expire(data, conn->timeoutms_per_addr, EXPIRE_DNS_PER_NAME);
/* Connect TCP sockets, bind UDP */
if(!isconnected && (conn->socktype == SOCK_STREAM)) {
- rc = connect(sockfd, &addr.sa_addr, addr.addrlen);
+ if(conn->bits.tcp_fastopen) {
+#if defined(CONNECT_DATA_IDEMPOTENT) /* Darwin */
+# if defined(HAVE_BUILTIN_AVAILABLE)
+ /* while connectx function is available since macOS 10.11 / iOS 9,
+ it did not have the interface declared correctly until
+ Xcode 9 / macOS SDK 10.13 */
+ if(__builtin_available(macOS 10.11, iOS 9.0, tvOS 9.0, watchOS 2.0, *)) {
+ sa_endpoints_t endpoints;
+ endpoints.sae_srcif = 0;
+ endpoints.sae_srcaddr = NULL;
+ endpoints.sae_srcaddrlen = 0;
+ endpoints.sae_dstaddr = &addr.sa_addr;
+ endpoints.sae_dstaddrlen = addr.addrlen;
+
+ rc = connectx(sockfd, &endpoints, SAE_ASSOCID_ANY,
+ CONNECT_RESUME_ON_READ_WRITE | CONNECT_DATA_IDEMPOTENT,
+ NULL, 0, NULL, NULL);
+ }
+ else {
+ rc = connect(sockfd, &addr.sa_addr, addr.addrlen);
+ }
+# else
+ rc = connect(sockfd, &addr.sa_addr, addr.addrlen);
+# endif /* HAVE_BUILTIN_AVAILABLE */
+#elif defined(TCP_FASTOPEN_CONNECT) /* Linux >= 4.11 */
+ if(setsockopt(sockfd, IPPROTO_TCP, TCP_FASTOPEN_CONNECT,
+ (void *)&optval, sizeof(optval)) < 0)
+ infof(data, "Failed to enable TCP Fast Open on fd %d\n", sockfd);
+ else
+ infof(data, "TCP_FASTOPEN_CONNECT set\n");
+
+ rc = connect(sockfd, &addr.sa_addr, addr.addrlen);
+#elif defined(MSG_FASTOPEN) /* old Linux */
+ if(conn->given->flags & PROTOPT_SSL)
+ rc = connect(sockfd, &addr.sa_addr, addr.addrlen);
+ else
+ rc = 0; /* Do nothing */
+#endif
+ }
+ else {
+ rc = connect(sockfd, &addr.sa_addr, addr.addrlen);
+ }
+
if(-1 == rc)
error = SOCKERRNO;
- conn->connecttime = Curl_tvnow();
- if(conn->num_addr > 1)
- Curl_expire(data, conn->timeoutms_per_addr);
}
- else
- rc = 0;
+ else {
+ *sockp = sockfd;
+ return CURLE_OK;
+ }
if(-1 == rc) {
- switch (error) {
+ switch(error) {
case EINPROGRESS:
case EWOULDBLOCK:
#if defined(EAGAIN)
case EAGAIN:
#endif
#endif
- rc = waitconnect(conn, sockfd, timeout_ms);
- if(WAITCONN_ABORTED == rc) {
- Curl_closesocket(conn, sockfd);
- return CURLE_ABORTED_BY_CALLBACK;
- }
+ result = CURLE_OK;
break;
+
default:
/* unknown error, fallthrough and try another address! */
- failf(data, "Failed to connect to %s: %s",
- conn->ip_addr_str, Curl_strerror(conn,error));
+ infof(data, "Immediate connect fail for %s: %s\n",
+ ipaddress, Curl_strerror(conn, error));
data->state.os_errno = error;
- break;
- }
- }
- /* The 'WAITCONN_TIMEOUT == rc' comes from the waitconnect(), and not from
- connect(). We can be sure of this since connect() cannot return 1. */
- if((WAITCONN_TIMEOUT == rc) &&
- (data->state.used_interface == Curl_if_multi)) {
- /* Timeout when running the multi interface */
- *sockp = sockfd;
- return CURLE_OK;
+ /* connect failed */
+ Curl_closesocket(conn, sockfd);
+ result = CURLE_COULDNT_CONNECT;
+ }
}
- if(!isconnected)
- isconnected = verifyconnect(sockfd, &error);
-
- if(!rc && isconnected) {
- /* we are connected, awesome! */
- *connected = TRUE; /* this is a true connect */
- infof(data, "connected\n");
-#ifdef ENABLE_IPV6
- conn->bits.ipv6 = (addr.family == AF_INET6)?TRUE:FALSE;
-#endif
-
- Curl_updateconninfo(conn, sockfd);
+ if(!result)
*sockp = sockfd;
- return CURLE_OK;
- }
- else if(WAITCONN_TIMEOUT == rc)
- infof(data, "Timeout\n");
- else {
- data->state.os_errno = error;
- infof(data, "%s\n", Curl_strerror(conn, error));
- }
-
- /* connect failed or timed out */
- Curl_closesocket(conn, sockfd);
- return CURLE_OK;
+ return result;
}
/*
*/
CURLcode Curl_connecthost(struct connectdata *conn, /* context */
- const struct Curl_dns_entry *remotehost,
- curl_socket_t *sockconn, /* the connected socket */
- Curl_addrinfo **addr, /* the one we used */
- bool *connected) /* really connected? */
+ const struct Curl_dns_entry *remotehost)
{
- struct SessionHandle *data = conn->data;
- curl_socket_t sockfd = CURL_SOCKET_BAD;
- Curl_addrinfo *ai;
- Curl_addrinfo *curr_addr;
+ struct Curl_easy *data = conn->data;
+ struct curltime before = Curl_now();
+ CURLcode result = CURLE_COULDNT_CONNECT;
- struct timeval after;
- struct timeval before = Curl_tvnow();
-
- /*************************************************************
- * Figure out what maximum time we have left
- *************************************************************/
- long timeout_ms;
-
- DEBUGASSERT(sockconn);
- *connected = FALSE; /* default to not connected */
-
- /* get the timeout left */
- timeout_ms = Curl_timeleft(data, &before, TRUE);
+ timediff_t timeout_ms = Curl_timeleft(data, &before, TRUE);
if(timeout_ms < 0) {
/* a precaution, no need to continue if time already is up */
return CURLE_OPERATION_TIMEDOUT;
}
- /* Max time for each address */
conn->num_addr = Curl_num_addresses(remotehost->addr);
- conn->timeoutms_per_addr = timeout_ms / conn->num_addr;
-
- ai = remotehost->addr;
-
- /* Below is the loop that attempts to connect to all IP-addresses we
- * know for the given host. One by one until one IP succeeds.
- */
-
- /*
- * Connecting with a Curl_addrinfo chain
- */
- for(curr_addr = ai; curr_addr; curr_addr = curr_addr->ai_next) {
-
- /* start connecting to the IP curr_addr points to */
- CURLcode res =
- singleipconnect(conn, curr_addr,
- /* don't hang when doing multi */
- (data->state.used_interface == Curl_if_multi)?0:
- conn->timeoutms_per_addr, &sockfd, connected);
-
- if(res)
- return res;
-
- if(sockfd != CURL_SOCKET_BAD)
+ conn->tempaddr[0] = remotehost->addr;
+ conn->tempaddr[1] = NULL;
+ conn->tempsock[0] = CURL_SOCKET_BAD;
+ conn->tempsock[1] = CURL_SOCKET_BAD;
+
+ /* Max time for the next connection attempt */
+ conn->timeoutms_per_addr =
+ conn->tempaddr[0]->ai_next == NULL ? timeout_ms : timeout_ms / 2;
+
+ /* start connecting to first IP */
+ while(conn->tempaddr[0]) {
+ result = singleipconnect(conn, conn->tempaddr[0], &(conn->tempsock[0]));
+ if(!result)
break;
-
- /* get a new timeout for next attempt */
- after = Curl_tvnow();
- timeout_ms -= Curl_tvdiff(after, before);
- if(timeout_ms < 0) {
- failf(data, "connect() timed out!");
- return CURLE_OPERATION_TIMEDOUT;
- }
- before = after;
- } /* end of connect-to-each-address loop */
-
- *sockconn = sockfd; /* the socket descriptor we've connected */
-
- if(sockfd == CURL_SOCKET_BAD) {
- /* no good connect was made */
- failf(data, "couldn't connect to host");
- return CURLE_COULDNT_CONNECT;
+ conn->tempaddr[0] = conn->tempaddr[0]->ai_next;
}
- /* leave the socket in non-blocking mode */
-
- /* store the address we use */
- if(addr)
- *addr = curr_addr;
+ if(conn->tempsock[0] == CURL_SOCKET_BAD) {
+ if(!result)
+ result = CURLE_COULDNT_CONNECT;
+ return result;
+ }
data->info.numconnects++; /* to track the number of connections made */
+ Curl_expire(conn->data, data->set.happy_eyeballs_timeout,
+ EXPIRE_HAPPY_EYEBALLS);
return CURLE_OK;
}
+struct connfind {
+ struct connectdata *tofind;
+ bool found;
+};
+
+static int conn_is_conn(struct connectdata *conn, void *param)
+{
+ struct connfind *f = (struct connfind *)param;
+ if(conn == f->tofind) {
+ f->found = TRUE;
+ return 1;
+ }
+ return 0;
+}
+
/*
* Used to extract socket and connectdata struct for the most recent
- * transfer on the given SessionHandle.
+ * transfer on the given Curl_easy.
*
* The returned socket will be CURL_SOCKET_BAD in case of failure!
*/
-curl_socket_t Curl_getconnectinfo(struct SessionHandle *data,
+curl_socket_t Curl_getconnectinfo(struct Curl_easy *data,
struct connectdata **connp)
{
curl_socket_t sockfd;
DEBUGASSERT(data);
- if((data->state.lastconnect != -1) &&
- (data->state.connc->connects[data->state.lastconnect] != NULL)) {
- struct connectdata *c =
- data->state.connc->connects[data->state.lastconnect];
+ /* this works for an easy handle:
+ * - that has been used for curl_easy_perform()
+ * - that is associated with a multi handle, and whose connection
+ * was detached with CURLOPT_CONNECT_ONLY
+ */
+ if(data->state.lastconnect && (data->multi_easy || data->multi)) {
+ struct connectdata *c = data->state.lastconnect;
+ struct connfind find;
+ find.tofind = data->state.lastconnect;
+ find.found = FALSE;
+
+ Curl_conncache_foreach(data, data->multi_easy?
+ &data->multi_easy->conn_cache:
+ &data->multi->conn_cache, &find, conn_is_conn);
+
+ if(!find.found) {
+ data->state.lastconnect = NULL;
+ return CURL_SOCKET_BAD;
+ }
+
if(connp)
/* only store this if the caller cares for it */
*connp = c;
sockfd = c->sock[FIRSTSOCKET];
- /* we have a socket connected, let's determine if the server shut down */
- /* determine if ssl */
- if(c->ssl[FIRSTSOCKET].use) {
- /* use the SSL context */
- if(!Curl_ssl_check_cxn(c))
- return CURL_SOCKET_BAD; /* FIN received */
- }
-/* Minix 3.1 doesn't support any flags on recv; just assume socket is OK */
-#ifdef MSG_PEEK
- else {
- /* use the socket */
- char buf;
- if(recv((RECV_TYPE_ARG1)c->sock[FIRSTSOCKET], (RECV_TYPE_ARG2)&buf,
- (RECV_TYPE_ARG3)1, (RECV_TYPE_ARG4)MSG_PEEK) == 0) {
- return CURL_SOCKET_BAD; /* FIN received */
- }
- }
-#endif
}
else
return CURL_SOCKET_BAD;
}
/*
+ * Check if a connection seems to be alive.
+ */
+bool Curl_connalive(struct connectdata *conn)
+{
+ /* First determine if ssl */
+ if(conn->ssl[FIRSTSOCKET].use) {
+ /* use the SSL context */
+ if(!Curl_ssl_check_cxn(conn))
+ return false; /* FIN received */
+ }
+/* Minix 3.1 doesn't support any flags on recv; just assume socket is OK */
+#ifdef MSG_PEEK
+ else if(conn->sock[FIRSTSOCKET] == CURL_SOCKET_BAD)
+ return false;
+ else {
+ /* use the socket */
+ char buf;
+ if(recv((RECV_TYPE_ARG1)conn->sock[FIRSTSOCKET], (RECV_TYPE_ARG2)&buf,
+ (RECV_TYPE_ARG3)1, (RECV_TYPE_ARG4)MSG_PEEK) == 0) {
+ return false; /* FIN received */
+ }
+ }
+#endif
+ return true;
+}
+
+/*
* Close a socket.
*
* 'conn' can be NULL, beware!
*/
int Curl_closesocket(struct connectdata *conn,
- curl_socket_t sock)
+ curl_socket_t sock)
{
if(conn && conn->fclosesocket) {
if((sock == conn->sock[SECONDARYSOCKET]) &&
accept, then we MUST NOT call the callback but clear the accepted
status */
conn->sock_accepted[SECONDARYSOCKET] = FALSE;
- else
- return conn->fclosesocket(conn->closesocket_client, sock);
+ else {
+ int rc;
+ Curl_multi_closed(conn, sock);
+ Curl_set_in_callback(conn->data, true);
+ rc = conn->fclosesocket(conn->closesocket_client, sock);
+ Curl_set_in_callback(conn->data, false);
+ return rc;
+ }
}
- return sclose(sock);
+
+ if(conn)
+ /* tell the multi-socket code about this */
+ Curl_multi_closed(conn, sock);
+
+ sclose(sock);
+
+ return 0;
}
/*
struct Curl_sockaddr_ex *addr,
curl_socket_t *sockfd)
{
- struct SessionHandle *data = conn->data;
+ struct Curl_easy *data = conn->data;
struct Curl_sockaddr_ex dummy;
if(!addr)
addr->family = ai->ai_family;
addr->socktype = conn->socktype;
- addr->protocol = conn->socktype==SOCK_DGRAM?IPPROTO_UDP:ai->ai_protocol;
+ addr->protocol = conn->socktype == SOCK_DGRAM?IPPROTO_UDP:ai->ai_protocol;
addr->addrlen = ai->ai_addrlen;
if(addr->addrlen > sizeof(struct Curl_sockaddr_storage))
addr->addrlen = sizeof(struct Curl_sockaddr_storage);
memcpy(&addr->sa_addr, ai->ai_addr, addr->addrlen);
- if(data->set.fopensocket)
+ if(data->set.fopensocket) {
/*
* If the opensocket callback is set, all the destination address
* information is passed to the callback. Depending on this information the
* might have been changed and this 'new' address will actually be used
* here to connect.
*/
+ Curl_set_in_callback(data, true);
*sockfd = data->set.fopensocket(data->set.opensocket_client,
CURLSOCKTYPE_IPCXN,
(struct curl_sockaddr *)addr);
+ Curl_set_in_callback(data, false);
+ }
else
/* opensocket callback not set, so simply create the socket now */
*sockfd = socket(addr->family, addr->socktype, addr->protocol);
if(*sockfd == CURL_SOCKET_BAD)
/* no socket, no connection */
- return CURLE_FAILED_INIT;
+ return CURLE_COULDNT_CONNECT;
#if defined(ENABLE_IPV6) && defined(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID)
- if(conn->scope && (addr->family == AF_INET6)) {
+ if(conn->scope_id && (addr->family == AF_INET6)) {
struct sockaddr_in6 * const sa6 = (void *)&addr->sa_addr;
- sa6->sin6_scope_id = conn->scope;
+ sa6->sin6_scope_id = conn->scope_id;
}
#endif
return CURLE_OK;
}
+
+/*
+ * Curl_conncontrol() marks streams or connection for closure.
+ */
+void Curl_conncontrol(struct connectdata *conn,
+ int ctrl /* see defines in header */
+#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
+ , const char *reason
+#endif
+ )
+{
+ /* close if a connection, or a stream that isn't multiplexed */
+ bool closeit = (ctrl == CONNCTRL_CONNECTION) ||
+ ((ctrl == CONNCTRL_STREAM) && !(conn->handler->flags & PROTOPT_STREAM));
+ if((ctrl == CONNCTRL_STREAM) &&
+ (conn->handler->flags & PROTOPT_STREAM))
+ DEBUGF(infof(conn->data, "Kill stream: %s\n", reason));
+ else if(closeit != conn->bits.close) {
+ DEBUGF(infof(conn->data, "Marked for [%s]: %s\n",
+ closeit?"closure":"keep alive", reason));
+ conn->bits.close = closeit; /* the only place in the source code that
+ should assign this bit */
+ }
+}
+
+/* Data received can be cached at various levels, so check them all here. */
+bool Curl_conn_data_pending(struct connectdata *conn, int sockindex)
+{
+ int readable;
+
+ if(Curl_ssl_data_pending(conn, sockindex) ||
+ Curl_recv_has_postponed_data(conn, sockindex))
+ return true;
+
+ readable = SOCKET_READABLE(conn->sock[sockindex], 0);
+ return (readable > 0 && (readable & CURL_CSELECT_IN));
+}
projects / platform / upstream / curl.git / blobdiff