- Larry Campbell added CURLINFO_OS_ERRNO to curl_easy_getinfo() that allows an

app to retrieve the errno variable after a (connect) failure. It will make
  sense to provide this for more failures in a more generic way, but let's
  start like this.

CHANGES

@@ -7,6 +7,11 @@
                                   Changelog
 
 Daniel (30 September 2004)
+- Larry Campbell added CURLINFO_OS_ERRNO to curl_easy_getinfo() that allows an
+  app to retrieve the errno variable after a (connect) failure. It will make
+  sense to provide this for more failures in a more generic way, but let's
+  start like this.
+
 - Günter Knauf and Casey O'Donnell worked out an extra #if condition for the
   curl/multi.h header to work better in winsock-using apps.
 

TODO-RELEASE

@@ -3,7 +3,7 @@ Issues not sorted in any particular order.
 To get fixed in 7.12.2 (planned release: mid October 2004)
 ======================
 
-40 - Larry Campbell's curl_easy_getinfo patch
+40 - fixed
 
 41 - Fedor Karpelevitch's formpost path basename patch
 
@@ -15,7 +15,7 @@ To get fixed in 7.12.2 (planned release: mid October 2004)
 
 45 - Chris' suspected race condition in the windows threaded resolver
 
-46 - Casey O'Donnell's multi.h winsock header fix
+46 - fixed
 
 47 - Peter Sylvester's patch related to the new SRP on the TLS layer
 

docs/libcurl/curl_easy_getinfo.3

@@ -110,6 +110,8 @@ CURLOPT_HTTPAUTH option for \fIcurl_easy_setopt(3)\fP.  (Added in 7.10.8)
 .IP CURLINFO_PROXYAUTH_AVAIL
 Pass a pointer to a long to receive a bitmask indicating the authentication
 method(s) available for your proxy authentication.  (Added in 7.10.8)
+.IP CURLINFO_OS_ERRNO
+Pass a pointer to a long to receive the errno variable from a connect failure.
 .SH RETURN VALUE
 If the operation was successful, CURLE_OK is returned. Otherwise an
 appropriate error code will be returned.

include/curl/curl.h

@@ -1178,9 +1178,10 @@ typedef enum {
   CURLINFO_HTTP_CONNECTCODE = CURLINFO_LONG   + 22,
   CURLINFO_HTTPAUTH_AVAIL   = CURLINFO_LONG   + 23,
   CURLINFO_PROXYAUTH_AVAIL  = CURLINFO_LONG   + 24,
+  CURLINFO_OS_ERRNO	    = CURLINFO_LONG   + 25,
   /* Fill in new entries below here! */
 
-  CURLINFO_LASTONE          = 23
+  CURLINFO_LASTONE          = 26
 } CURLINFO;
 
 /* CURLINFO_RESPONSE_CODE is the new name for the option previously known as

lib/connect.c

@@ -355,7 +355,8 @@ static CURLcode bindlocal(struct connectdata *conn,
         }
 
         if(!bindworked) {
-          failf(data, "%s", Curl_strerror(conn, Curl_ourerrno()));
+          data->state.os_errno = Curl_ourerrno();
+          failf(data, "%s", Curl_strerror(conn, data->state.os_errno));
           return CURLE_HTTP_PORT_FAILED;
         }
 
@@ -508,12 +509,14 @@ CURLcode Curl_is_connected(struct connectdata *conn,
   rc = waitconnect(sockfd, 0);
 
   if(WAITCONN_CONNECTED == rc) {
-    if (verifyconnect(sockfd, NULL)) {
+    int error;
+    if (verifyconnect(sockfd, &error)) {
       /* we are connected, awesome! */
       *connected = TRUE;
       return CURLE_OK;
     }
     /* nope, not connected for real */
+    data->state.os_errno = error;
     infof(data, "Connection failed\n");
     if(trynextip(conn, sockindex, connected)) {
       code = CURLE_COULDNT_CONNECT;
@@ -635,8 +638,10 @@ singleipconnect(struct connectdata *conn,
   }
   else if(WAITCONN_TIMEOUT == rc)
     infof(data, "Timeout\n");
-  else
+  else {
+    data->state.os_errno = error;
     infof(data, "%s\n", Curl_strerror(conn, error));
+  }
 
   /* connect failed or timed out */
   sclose(sockfd);

lib/getinfo.c

@@ -167,6 +167,9 @@ CURLcode Curl_getinfo(struct SessionHandle *data, CURLINFO info, ...)
   case CURLINFO_PROXYAUTH_AVAIL:
     *param_longp = data->info.proxyauthavail;
     break;
+  case CURLINFO_OS_ERRNO:
+    *param_longp = data->state.os_errno;
+    break;
   default:
     return CURLE_BAD_FUNCTION_ARGUMENT;
   }

lib/urldata.h

@@ -733,7 +733,7 @@ struct UrlState {
   bool errorbuf; /* Set to TRUE if the error buffer is already filled in.
                     This must be set to FALSE every time _easy_perform() is
                     called. */
-
+  int os_errno;  /* filled in with errno whenever an error occurs */
 #ifdef HAVE_SIGNAL
   /* storage for the previous bag^H^H^HSIGPIPE signal handler :-) */
   void (*prev_signal)(int sig);