net.http, net.websocket: allow importing both in the same app

vlib/net/openssl/c.v

@@ -0,0 +1,60 @@
+module openssl
+
+// On linux, prefer a localy build openssl, because it is
+// much more likely for it to be newer, than the system
+// openssl from libssl-dev. If there is no local openssl,
+// the next flag is harmless, since it will still use the
+// (older) system openssl.
+#flag linux -I/usr/local/include/openssl -L/usr/local/lib
+#flag -l ssl -l crypto
+// MacPorts
+#flag darwin -I/opt/local/include
+#flag darwin -L/opt/local/lib
+// Brew
+#flag darwin -I/usr/local/opt/openssl/include
+#flag darwin -L/usr/local/opt/openssl/lib
+#include <openssl/rand.h>
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+
+pub struct C.SSL {}
+pub struct SSL_CTX {}
+pub struct SSL {}
+pub struct SSL_METHOD {}
+
+fn C.BIO_new_ssl_connect() voidptr
+fn C.BIO_set_conn_hostname() int
+fn C.BIO_get_ssl()
+fn C.BIO_do_connect() int
+fn C.BIO_do_handshake() int
+fn C.BIO_puts()
+fn C.BIO_read() int
+fn C.BIO_free_all()
+fn C.SSL_CTX_new() &C.SSL_CTX
+fn C.SSL_CTX_set_options()
+fn C.SSL_CTX_set_verify_depth()
+fn C.SSL_CTX_load_verify_locations() int
+fn C.SSL_CTX_free()
+fn C.SSL_new() &C.SSL
+fn C.SSL_set_fd() int
+fn C.SSL_connect() int
+fn C.SSL_set_cipher_list() int
+fn C.SSL_get_peer_certificate() int
+fn C.SSL_get_verify_result() int
+fn C.SSL_set_tlsext_host_name() int
+fn C.SSL_shutdown()
+fn C.SSL_free()
+fn C.SSL_write() int
+fn C.SSL_read() int
+fn C.SSL_load_error_strings()
+fn C.SSL_library_init()
+fn C.SSLv23_client_method() &C.SSL_METHOD
+fn C.TLSv1_2_method() voidptr
+
+fn init() {
+	C.SSL_library_init()
+}
+
+pub const (
+	is_used = 1
+)