From 9b98dbde344781e93e2bdcfa599428cda2fda41d Mon Sep 17 00:00:00 2001
From: David 'Digit' Turner <digit@android.com>
Date: Fri, 30 Jul 2010 15:35:00 -0700
Subject: Better detection of incorrect proxy values when starting the
 emulator.

Change-Id: I344f06fc16e051359669b8fe9b8dcec0ceca377d
---
 proxy/proxy_common.c        | 47 +++++++++++++++++++++++++++++++++++++++++++++
 proxy/proxy_common.h        | 12 ++++++++++++
 proxy/proxy_http_rewriter.c |  2 +-
 3 files changed, 60 insertions(+), 1 deletion(-)

(limited to 'proxy')

diff --git a/proxy/proxy_common.c b/proxy/proxy_common.c
index 7794a62..3a04eb8 100644
--- a/proxy/proxy_common.c
+++ b/proxy/proxy_common.c
@@ -17,6 +17,7 @@
 #include <errno.h>
 #include "android/utils/misc.h"
 #include "android/utils/system.h"
+#include "iolooper.h"
 #include <stdlib.h>
 
 int  proxy_log = 0;
@@ -530,3 +531,49 @@ Exit:
 }
 
 
+int
+proxy_check_connection( const char* proxyname,
+                        int         proxyname_len,
+                        int         proxyport,
+                        int         timeout_ms )
+{
+    SockAddress  addr;
+    int          sock;
+    IoLooper*    looper;
+    int          ret;
+
+    if (proxy_resolve_server(&addr, proxyname, proxyname_len, proxyport) < 0) {
+        return -1;
+    }
+
+    sock = socket_create(addr.family, SOCKET_STREAM);
+    if (sock < 0) {
+        PROXY_LOG("%s: Could not create socket !?: %s", __FUNCTION__, errno_str);
+        return -1;
+    }
+
+    socket_set_nonblock(sock);
+
+    /* An immediate connection is very unlikely, but deal with it, just in case */
+    if (socket_connect(sock, &addr) == 0) {
+        PROXY_LOG("%s: Immediate connection to %.*s:%d: %s !",
+                    __FUNCTION__, proxyname_len, proxyname, proxyport);
+        socket_close(sock);
+        return 0;
+    }
+
+    /* Ok, create an IoLooper object to wait for the connection */
+    looper = iolooper_new();
+    iolooper_add_write(looper, sock);
+
+    ret = iolooper_wait(looper, timeout_ms);
+
+    iolooper_free(looper);
+    socket_close(sock);
+
+    if (ret == 0) {
+        errno = ETIMEDOUT;
+        ret   = -1;
+    }
+    return ret;
+}
diff --git a/proxy/proxy_common.h b/proxy/proxy_common.h
index 78eddd8..5c5789f 100644
--- a/proxy/proxy_common.h
+++ b/proxy/proxy_common.h
@@ -85,4 +85,16 @@ extern void  proxy_manager_poll( fd_set*  read_fds,
                                  fd_set*  write_fds, 
                                  fd_set*  err_fds );
 
+/* this function checks that one can connect to a given proxy. It will simply try to connect()
+ * to it, for a specified timeout, in milliseconds, then close the connection.
+ *
+ * returns 0 in case of success, and -1 in case of error. errno will be set to ETIMEDOUT in
+ * case of timeout, or ECONNREFUSED if the connection is refused.
+ */
+
+extern int   proxy_check_connection( const char* proxyname,
+                                     int         proxyname_len,
+                                     int         proxyport,
+                                     int         timeout_ms );
+
 #endif /* END */
diff --git a/proxy/proxy_http_rewriter.c b/proxy/proxy_http_rewriter.c
index 7645ecc..af3f5e7 100644
--- a/proxy/proxy_http_rewriter.c
+++ b/proxy/proxy_http_rewriter.c
@@ -1121,7 +1121,7 @@ http_rewriter_connect( HttpService*  service,
     RewriteConnection*  conn;
     int                 s;
 
-    s = socket_create_inet( SOCKET_STREAM );
+    s = socket_create(address->family, SOCKET_STREAM );
     if (s < 0)
         return NULL;
 
-- 
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