moparisthebest/curl
1
0
Fork 0
mirror of https://github.com/moparisthebest/curl synced 2024-12-21 23:58:49 -05:00
Code Issues Releases Wiki Activity

praise Bjorn Reese for mastering these dusty corners of socket hacking, now

Browse Source 
we check for the error state before believing we are connected in IPv6
cases
This commit is contained in:
Daniel Stenberg 2001-10-02 17:18:46 +00:00
parent dd02881788
commit 72dbe9da72
1 changed files with 52 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

58
lib/connect.c
View File

@ -72,6 +72,16 @@
#include "memdebug.h"
#endif
static
int geterrno(void)
{
#ifdef WIN32
return (int)GetLastError();
#else
return errno;
#endif
}
/*************************************************************************
* Curl_nonblock
*
@ -300,6 +310,19 @@ static CURLcode bindlocal(struct connectdata *conn,
}
#endif /* end of ipv4-specific section */
static
int socketerror(int sockfd)
{
int err = 0;
socklen_t errSize = sizeof(err);
if( -1 == getsockopt(sockfd, SOL_SOCKET, SO_ERROR,
(void *)&err, &errSize))
err = geterrno();
return err;
}
/*
* TCP connect to the given host with timeout, proxy or remote doesn't matter.
* There might be more than one IP address to try out. Fill in the passed
@ -355,6 +378,7 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
*/
{
struct addrinfo *ai;
port =0; /* prevent compiler warning */
for (ai = remotehost; ai; ai = ai->ai_next, aliasindex++) {
sockfd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol);
@ -367,12 +391,8 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
rc = connect(sockfd, ai->ai_addr, ai->ai_addrlen);
if(-1 == rc) {
int error;
#ifdef WIN32
error = (int)GetLastError();
#else
error = errno;
#endif
int error=geterrno();
switch (error) {
case EINPROGRESS:
case EWOULDBLOCK:
@ -391,15 +411,22 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
case ECONNREFUSED: /* no one listening */
default:
/* unknown error, fallthrough and try another address! */
failf(data, "Failed to connect to IP number %d", aliasindex+1);
failf(data, "Failed to connect");
break;
}
}
if(0 == rc)
/* direct connect, awesome! */
break;
if(0 == rc) {
/* we might be connected, if the socket says it is OK! Ask it! */
int err;
err = socketerror(sockfd);
if ((0 == err) || (EISCONN == err)) {
/* we are connected, awesome! */
break;
}
/* we are _not_ connected, it was a false alert, continue please */
}
else {
/* connect failed or timed out */
sclose(sockfd);
sockfd = -1;
@ -414,7 +441,6 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
before = after;
continue;
}
}
if (sockfd < 0) {
failf(data, "connect() failed");
return CURLE_COULDNT_CONNECT;
@ -466,12 +492,8 @@ CURLcode Curl_connecthost(struct connectdata *conn, /* context */
sizeof(serv_addr));
if(-1 == rc) {
int error;
#ifdef WIN32
error = (int)GetLastError();
#else
error = errno;
#endif
int error=geterrno();
switch (error) {
case EINPROGRESS:
case EWOULDBLOCK: