147                       curl_socket_t writefd, /* socket to write to */  in Curl_socket_check()  argument
173      (writefd == CURL_SOCKET_BAD)) {  in Curl_socket_check()
204   if(writefd != CURL_SOCKET_BAD) {  in Curl_socket_check()
205     pfd[num].fd = writefd;  in Curl_socket_check()
253   if(writefd != CURL_SOCKET_BAD) {  in Curl_socket_check()
283   if(writefd != CURL_SOCKET_BAD) {  in Curl_socket_check()
284     VERIFY_SOCK(writefd);  in Curl_socket_check()
285     FD_SET(writefd, &fds_write);  in Curl_socket_check()
286     FD_SET(writefd, &fds_err);  in Curl_socket_check()
287     if(writefd > maxfd)  in Curl_socket_check()
288       maxfd = writefd;  in Curl_socket_check()
366   if(writefd != CURL_SOCKET_BAD) {  in Curl_socket_check()
367     if(FD_ISSET(writefd, &fds_write))  in Curl_socket_check()
369     if(FD_ISSET(writefd, &fds_err))  in Curl_socket_check()