Hi ,
I am trying to establish HTTPS connection with some url by using libcurl.
For sending and receiving message i am using curl_easy_send and curl_easy
_recv .i am to able to send the msg . after waiting on the wait_on_socket
function for receiving the response from PEER it is throwing the error 1)
" Failed to get recent socket "
2)"Unsupported protocol " .while waiting on socket for the receiving first
it wait around 15 to 20 sec and then it trows the error.i am providing here
the test application in which i am making https connection with google.com.
after waiting on socket for 15-20 sec it throws the error 1)" Failed to
get recent socket "
2)"Unsupported protocol " .i tried to googling but i didn't found much
.please help me out as soon as possible.i am also providing the test
application below.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 #include <stdio.h>
4 #include <string.h>
5 #include <curl/curl.h>
6
7
8 /* Auxiliary function that waits on the socket. */
9 static int wait_on_socket(curl_socket_t sockfd, int for_recv, long
timeout_ms)
10 {
11 struct timeval tv;
12 fd_set infd, outfd, errfd;
13 int res;
14
15 tv.tv_sec = timeout_ms / 1000;
16 tv.tv_usec= (timeout_ms % 1000) * 1000;
17
18 FD_ZERO(&infd);
19 FD_ZERO(&outfd);
20 FD_ZERO(&errfd);
21
22 FD_SET(sockfd, &errfd); /* always check for error */
23
24 if(for_recv)
25 {
26 FD_SET(sockfd, &infd);
27 res = select(sockfd + 1, &infd, &outfd, &errfd, NULL); /*Setting
NULL for waiting upto infinite time*/
28 }
29 else
30 {
31 FD_SET(sockfd, &outfd);
32 res = select(sockfd + 1, &infd, &outfd, &errfd, &tv);
33 }
34
36 return res;
37 }
38
39 int main(void)
40 {
41 CURL *curl;
42 CURLcode res;
43 curl_socket_t sockfd; /* socket */
44 long sockextr;
45 size_t iolen;
46
47 curl = curl_easy_init();
48 if(curl) {
49 curl_easy_setopt(curl, CURLOPT_URL, "https://google.com:443";);
50 /* Do not do the transfer - only connect to host */
51 curl_easy_setopt(curl, CURLOPT_CONNECT_ONLY, 1L);
52 curl_easy_setopt(curl,CURLOPT_SSL_VERIFYPEER,1L);
53 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2L);
54 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1);
55 res = curl_easy_perform(curl);
56
57 if(CURLE_OK != res)
58 {
59 printf("Error: %s\n", curl_easy_strerror(res));
60 return 1;
61 }
62
/* Extract the socket from the curl handle */
65
66 res = curl_easy_getinfo(curl, CURLINFO_LASTSOCKET, &sockextr);
67
68 if(CURLE_OK != res)
69 {
70 printf("Error: %s\n", curl_easy_strerror(res));
71 return 1;
72 }
73 sockfd = sockextr;
74
75
76 while(1)
77 {
78 char buf[1024];
79 printf("\nwaiting for recv msg\n");
80 int s=wait_on_socket(sockfd, 1, 60000L);
81 printf("\nno of socket %d return to read\n",s);
82 res = curl_easy_recv(curl, buf, 1024, &iolen);
83
84 if(CURLE_OK != res)
85 {
86 printf("Error in recv: %s\n", curl_easy_strerror(res));
87 break;
88 }
89 printf("Received %d bytes.data %s\n", iolen,buf);
90 }
91
92 curl_easy_cleanup(curl);
93 }
94 return 0;
95 }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
i am also providing the o/p which i am getting on the console
..............
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
* About to connect() to google.com port 443 (#0)
* Trying 74.125.236.73...
* connected
* Connected to google.com (74.125.236.73) port 443 (#0)
* successfully set certificate verify locations:
* CAfile: /etc/pki/tls/certs/ca-bundle.crt
CApath: none
* SSL connection using RC4-SHA
* Server certificate:
* subject: C=US; ST=California; L=Mountain View; O=Google Inc; CN=*.
google.com
* start date: 2012-02-16 10:38:09 GMT
* expire date: 2013-02-16 10:48:09 GMT
* subjectAltName: google.com matched
* issuer: C=US; O=Google Inc; CN=Google Internet Authority
* SSL certificate verify ok.
* Connection #0 to host google.com left intact
waiting for recv msg
no of socket 1 return to read
* Failed to get recent socket
Error in recv: Unsupported protocol
* Closing connection #0
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
My application is like that where it has to wait for message from PEER
without any time limit.....
Thanks
ANKIT TRIPATHI
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