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mysql2/ext/mysql2_ext.c

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#include "mysql2_ext.h"
/*
* non-blocking mysql_*() functions that we won't be wrapping since
* they do not appear to hit the network nor issue any interruptible
* or blocking system calls.
*
* - mysql_affected_rows()
* - mysql_error()
* - mysql_fetch_fields()
* - mysql_fetch_lengths() - calls cli_fetch_lengths or emb_fetch_lengths
* - mysql_field_count()
* - mysql_get_client_info()
* - mysql_get_client_version()
* - mysql_get_server_info()
* - mysql_get_server_version()
* - mysql_insert_id()
* - mysql_num_fields()
* - mysql_num_rows()
* - mysql_options()
* - mysql_real_escape_string()
* - mysql_ssl_set()
*/
static VALUE nogvl_init(void *ptr) {
struct nogvl_connect_args *args = ptr;
/* may initialize embedded server and read /etc/services off disk */
args->mysql = mysql_init(NULL);
return args->mysql == NULL ? Qfalse : Qtrue;
}
static VALUE nogvl_connect(void *ptr)
{
struct nogvl_connect_args *args = ptr;
MYSQL *client;
client = mysql_real_connect(args->mysql, args->host,
args->user, args->passwd,
args->db, args->port, args->unix_socket,
args->client_flag);
return client ? Qtrue : Qfalse;
}
/* Mysql2::Client */
static VALUE rb_mysql_client_new(int argc, VALUE * argv, VALUE klass) {
mysql2_client_wrapper * client;
struct nogvl_connect_args args = {
.host = "localhost",
.user = NULL,
.passwd = NULL,
.db = NULL,
.port = 3306,
.unix_socket = NULL,
.client_flag = 0
};
VALUE obj, opts;
VALUE rb_host, rb_socket, rb_port, rb_database,
rb_username, rb_password, rb_reconnect,
rb_connect_timeout;
VALUE rb_ssl_client_key, rb_ssl_client_cert, rb_ssl_ca_cert,
rb_ssl_ca_path, rb_ssl_cipher;
char *ssl_client_key = NULL, *ssl_client_cert = NULL, *ssl_ca_cert = NULL,
*ssl_ca_path = NULL, *ssl_cipher = NULL;
unsigned int connect_timeout = 0;
my_bool reconnect = 1;
obj = Data_Make_Struct(klass, mysql2_client_wrapper, NULL, rb_mysql_client_free, client);
if (rb_scan_args(argc, argv, "01", &opts) == 1) {
Check_Type(opts, T_HASH);
if ((rb_host = rb_hash_aref(opts, sym_host)) != Qnil) {
Check_Type(rb_host, T_STRING);
args.host = RSTRING_PTR(rb_host);
}
if ((rb_socket = rb_hash_aref(opts, sym_socket)) != Qnil) {
Check_Type(rb_socket, T_STRING);
args.unix_socket = RSTRING_PTR(rb_socket);
}
if ((rb_port = rb_hash_aref(opts, sym_port)) != Qnil) {
Check_Type(rb_port, T_FIXNUM);
args.port = FIX2INT(rb_port);
}
if ((rb_username = rb_hash_aref(opts, sym_username)) != Qnil) {
Check_Type(rb_username, T_STRING);
args.user = RSTRING_PTR(rb_username);
}
if ((rb_password = rb_hash_aref(opts, sym_password)) != Qnil) {
Check_Type(rb_password, T_STRING);
args.passwd = RSTRING_PTR(rb_password);
}
if ((rb_database = rb_hash_aref(opts, sym_database)) != Qnil) {
Check_Type(rb_database, T_STRING);
args.db = RSTRING_PTR(rb_database);
}
if ((rb_reconnect = rb_hash_aref(opts, sym_reconnect)) != Qnil) {
reconnect = rb_reconnect == Qfalse ? 0 : 1;
}
if ((rb_connect_timeout = rb_hash_aref(opts, sym_connect_timeout)) != Qnil) {
Check_Type(rb_connect_timeout, T_FIXNUM);
connect_timeout = FIX2INT(rb_connect_timeout);
}
// SSL options
if ((rb_ssl_client_key = rb_hash_aref(opts, sym_sslkey)) != Qnil) {
Check_Type(rb_ssl_client_key, T_STRING);
ssl_client_key = RSTRING_PTR(rb_ssl_client_key);
}
if ((rb_ssl_client_cert = rb_hash_aref(opts, sym_sslcert)) != Qnil) {
Check_Type(rb_ssl_client_cert, T_STRING);
ssl_client_cert = RSTRING_PTR(rb_ssl_client_cert);
}
if ((rb_ssl_ca_cert = rb_hash_aref(opts, sym_sslca)) != Qnil) {
Check_Type(rb_ssl_ca_cert, T_STRING);
ssl_ca_cert = RSTRING_PTR(rb_ssl_ca_cert);
}
if ((rb_ssl_ca_path = rb_hash_aref(opts, sym_sslcapath)) != Qnil) {
Check_Type(rb_ssl_ca_path, T_STRING);
ssl_ca_path = RSTRING_PTR(rb_ssl_ca_path);
}
if ((rb_ssl_cipher = rb_hash_aref(opts, sym_sslcipher)) != Qnil) {
Check_Type(rb_ssl_cipher, T_STRING);
ssl_cipher = RSTRING_PTR(rb_ssl_cipher);
}
}
if (rb_thread_blocking_region(nogvl_init, &args, RUBY_UBF_IO, 0) == Qfalse) {
// TODO: warning - not enough memory?
rb_raise(cMysql2Error, "%s", mysql_error(args.mysql));
return Qnil;
}
// set default reconnect behavior
if (mysql_options(args.mysql, MYSQL_OPT_RECONNECT, &reconnect) != 0) {
// TODO: warning - unable to set reconnect behavior
rb_warn("%s\n", mysql_error(args.mysql));
}
// set default connection timeout behavior
if (connect_timeout != 0 && mysql_options(args.mysql, MYSQL_OPT_CONNECT_TIMEOUT, (const char *)&connect_timeout) != 0) {
// TODO: warning - unable to set connection timeout
rb_warn("%s\n", mysql_error(args.mysql));
}
// force the encoding to utf8
if (mysql_options(args.mysql, MYSQL_SET_CHARSET_NAME, "utf8") != 0) {
// TODO: warning - unable to set charset
rb_warn("%s\n", mysql_error(args.mysql));
}
if (ssl_ca_cert != NULL || ssl_client_key != NULL) {
mysql_ssl_set(args.mysql, ssl_client_key, ssl_client_cert, ssl_ca_cert, ssl_ca_path, ssl_cipher);
}
if (rb_thread_blocking_region(nogvl_connect, &args, RUBY_UBF_IO, 0) == Qfalse) {
// unable to connect
rb_raise(cMysql2Error, "%s", mysql_error(args.mysql));
return Qnil;
}
client->client = args.mysql;
rb_obj_call_init(obj, argc, argv);
return obj;
}
static VALUE rb_mysql_client_init(RB_MYSQL_UNUSED int argc, RB_MYSQL_UNUSED VALUE * argv, VALUE self) {
return self;
}
static void rb_mysql_client_free(void * ptr) {
mysql2_client_wrapper * client = ptr;
if (client->client) {
/*
* we'll send a QUIT message to the server, but that message is more of a
* formality than a hard requirement since the socket is getting shutdown
* anyways, so ensure the socket write does not block our interpreter
*/
int fd = client->client->net.fd;
int flags;
if (fd >= 0) {
/*
* if the socket is dead we have no chance of blocking,
* so ignore any potential fcntl errors since they don't matter
*/
flags = fcntl(fd, F_GETFL);
if (flags > 0 && !(flags & O_NONBLOCK))
fcntl(fd, F_SETFL, flags | O_NONBLOCK);
}
mysql_close(client->client);
}
xfree(ptr);
}
static VALUE nogvl_close(void * ptr) {
mysql_close((MYSQL *)ptr);
return Qnil;
}
/*
* Immediately disconnect from the server, normally the garbage collector
* will disconnect automatically when a connection is no longer needed.
* Explicitly closing this will free up server resources sooner than waiting
* for the garbage collector.
*/
static VALUE rb_mysql_client_close(VALUE self) {
mysql2_client_wrapper *client;
Data_Get_Struct(self, mysql2_client_wrapper, client);
if (client->client) {
rb_thread_blocking_region(nogvl_close, client->client, RUBY_UBF_IO, 0);
client->client = NULL;
} else {
rb_raise(cMysql2Error, "already closed MySQL connection");
}
return Qnil;
}
/*
* mysql_send_query is unlikely to block since most queries are small
* enough to fit in a socket buffer, but sometimes large UPDATE and
* INSERTs will cause the process to block
*/
static VALUE nogvl_send_query(void *ptr)
{
struct nogvl_send_query_args *args = ptr;
int rv;
const char *sql = RSTRING_PTR(args->sql);
long sql_len = RSTRING_LEN(args->sql);
rv = mysql_send_query(args->mysql, sql, sql_len);
return rv == 0 ? Qtrue : Qfalse;
}
static VALUE rb_mysql_client_query(int argc, VALUE * argv, VALUE self) {
struct nogvl_send_query_args args;
fd_set fdset;
int fd, retval;
int async = 0;
VALUE opts;
VALUE rb_async;
if (rb_scan_args(argc, argv, "11", &args.sql, &opts) == 2) {
if ((rb_async = rb_hash_aref(opts, sym_async)) != Qnil) {
async = rb_async == Qtrue ? 1 : 0;
}
}
Check_Type(args.sql, T_STRING);
GetMysql2Client(self, args.mysql);
if (rb_thread_blocking_region(nogvl_send_query, &args, RUBY_UBF_IO, 0) == Qfalse) {
rb_raise(cMysql2Error, "%s", mysql_error(args.mysql));
return Qnil;
}
if (!async) {
// the below code is largely from do_mysql
// http://github.com/datamapper/do
fd = args.mysql->net.fd;
for(;;) {
FD_ZERO(&fdset);
FD_SET(fd, &fdset);
retval = rb_thread_select(fd + 1, &fdset, NULL, NULL, NULL);
if (retval < 0) {
rb_sys_fail(0);
}
if (retval > 0) {
break;
}
}
return rb_mysql_client_async_result(self);
} else {
return Qnil;
}
}
static VALUE rb_mysql_client_escape(VALUE self, VALUE str) {
MYSQL * client;
VALUE newStr;
unsigned long newLen, oldLen;
Check_Type(str, T_STRING);
oldLen = RSTRING_LEN(str);
char escaped[(oldLen*2)+1];
GetMysql2Client(self, client);
newLen = mysql_real_escape_string(client, escaped, RSTRING_PTR(str), RSTRING_LEN(str));
if (newLen == oldLen) {
// no need to return a new ruby string if nothing changed
return str;
} else {
newStr = rb_str_new(escaped, newLen);
#ifdef HAVE_RUBY_ENCODING_H
rb_enc_associate_index(newStr, utf8Encoding);
#endif
return newStr;
}
}
static VALUE rb_mysql_client_info(RB_MYSQL_UNUSED VALUE self) {
VALUE version = rb_hash_new();
rb_hash_aset(version, sym_id, LONG2FIX(mysql_get_client_version()));
rb_hash_aset(version, sym_version, rb_str_new2(mysql_get_client_info()));
return version;
}
static VALUE rb_mysql_client_server_info(VALUE self) {
MYSQL * client;
VALUE version;
GetMysql2Client(self, client);
version = rb_hash_new();
rb_hash_aset(version, sym_id, LONG2FIX(mysql_get_server_version(client)));
rb_hash_aset(version, sym_version, rb_str_new2(mysql_get_server_info(client)));
return version;
}
static VALUE rb_mysql_client_socket(VALUE self) {
MYSQL * client = GetMysql2Client(self, client);;
return INT2NUM(client->net.fd);
}
/*
* even though we did rb_thread_select before calling this, a large
* response can overflow the socket buffers and cause us to eventually
* block while calling mysql_read_query_result
*/
static VALUE nogvl_read_query_result(void *ptr)
{
MYSQL * client = ptr;
my_bool res = mysql_read_query_result(client);
return res == 0 ? Qtrue : Qfalse;
}
/* mysql_store_result may (unlikely) read rows off the socket */
static VALUE nogvl_store_result(void *ptr)
{
MYSQL * client = ptr;
return (VALUE)mysql_store_result(client);
}
static VALUE rb_mysql_client_async_result(VALUE self) {
MYSQL * client;
MYSQL_RES * result;
GetMysql2Client(self, client);
if (rb_thread_blocking_region(nogvl_read_query_result, client, RUBY_UBF_IO, 0) == Qfalse) {
rb_raise(cMysql2Error, "%s", mysql_error(client));
return Qnil;
}
result = (MYSQL_RES *)rb_thread_blocking_region(nogvl_store_result, client, RUBY_UBF_IO, 0);
if (result == NULL) {
if (mysql_field_count(client) != 0) {
rb_raise(cMysql2Error, "%s", mysql_error(client));
}
return Qnil;
}
return rb_mysql_result_to_obj(result);
}
static VALUE rb_mysql_client_last_id(VALUE self) {
MYSQL * client;
GetMysql2Client(self, client);
return ULL2NUM(mysql_insert_id(client));
}
static VALUE rb_mysql_client_affected_rows(VALUE self) {
MYSQL * client;
GetMysql2Client(self, client);
return ULL2NUM(mysql_affected_rows(client));
}
/* Mysql2::Result */
static VALUE rb_mysql_result_to_obj(MYSQL_RES * r) {
VALUE obj;
mysql2_result_wrapper * wrapper;
obj = Data_Make_Struct(cMysql2Result, mysql2_result_wrapper, rb_mysql_result_mark, rb_mysql_result_free, wrapper);
wrapper->numberOfFields = 0;
wrapper->numberOfRows = 0;
wrapper->lastRowProcessed = 0;
wrapper->resultFreed = 0;
wrapper->result = r;
rb_obj_call_init(obj, 0, NULL);
return obj;
}
/* this may be called manually or during GC */
static void rb_mysql_result_free_result(mysql2_result_wrapper * wrapper) {
if (wrapper && wrapper->resultFreed != 1) {
mysql_free_result(wrapper->result);
wrapper->resultFreed = 1;
}
}
/* this is called during GC */
static void rb_mysql_result_free(void * wrapper) {
mysql2_result_wrapper * w = wrapper;
/* FIXME: this may call flush_use_result, which can hit the socket */
rb_mysql_result_free_result(w);
xfree(wrapper);
}
static void rb_mysql_result_mark(void * wrapper) {
mysql2_result_wrapper * w = wrapper;
if (w) {
rb_gc_mark(w->fields);
rb_gc_mark(w->rows);
}
}
/*
* for small results, this won't hit the network, but there's no
* reliable way for us to tell this so we'll always release the GVL
* to be safe
*/
static VALUE nogvl_fetch_row(void *ptr)
{
MYSQL_RES *result = ptr;
return (VALUE)mysql_fetch_row(result);
}
static VALUE rb_mysql_result_fetch_row(int argc, VALUE * argv, VALUE self) {
VALUE rowHash, opts, block;
mysql2_result_wrapper * wrapper;
MYSQL_ROW row;
MYSQL_FIELD * fields = NULL;
unsigned int i = 0, symbolizeKeys = 0;
unsigned long * fieldLengths;
void * ptr;
GetMysql2Result(self, wrapper);
if (rb_scan_args(argc, argv, "01&", &opts, &block) == 1) {
Check_Type(opts, T_HASH);
if (rb_hash_aref(opts, sym_symbolize_keys) == Qtrue) {
symbolizeKeys = 1;
}
}
ptr = wrapper->result;
row = (MYSQL_ROW)rb_thread_blocking_region(nogvl_fetch_row, ptr, RUBY_UBF_IO, 0);
if (row == NULL) {
return Qnil;
}
if (wrapper->numberOfFields == 0) {
wrapper->numberOfFields = mysql_num_fields(wrapper->result);
wrapper->fields = rb_ary_new2(wrapper->numberOfFields);
}
rowHash = rb_hash_new();
fields = mysql_fetch_fields(wrapper->result);
fieldLengths = mysql_fetch_lengths(wrapper->result);
for (i = 0; i < wrapper->numberOfFields; i++) {
// lazily create fields, but only once
// we'll use cached versions from here on out
VALUE field = rb_ary_entry(wrapper->fields, i);
if (field == Qnil) {
if (symbolizeKeys) {
char buf[fields[i].name_length+1];
memcpy(buf, fields[i].name, fields[i].name_length);
buf[fields[i].name_length] = 0;
field = ID2SYM(rb_intern(buf));
} else {
field = rb_str_new(fields[i].name, fields[i].name_length);
#ifdef HAVE_RUBY_ENCODING_H
rb_enc_associate_index(field, utf8Encoding);
#endif
}
rb_ary_store(wrapper->fields, i, field);
}
if (row[i]) {
VALUE val;
switch(fields[i].type) {
case MYSQL_TYPE_NULL: // NULL-type field
val = Qnil;
break;
case MYSQL_TYPE_BIT: // BIT field (MySQL 5.0.3 and up)
val = rb_str_new(row[i], fieldLengths[i]);
break;
case MYSQL_TYPE_TINY: // TINYINT field
case MYSQL_TYPE_SHORT: // SMALLINT field
case MYSQL_TYPE_LONG: // INTEGER field
case MYSQL_TYPE_INT24: // MEDIUMINT field
case MYSQL_TYPE_LONGLONG: // BIGINT field
case MYSQL_TYPE_YEAR: // YEAR field
val = rb_cstr2inum(row[i], 10);
break;
case MYSQL_TYPE_DECIMAL: // DECIMAL or NUMERIC field
case MYSQL_TYPE_NEWDECIMAL: // Precision math DECIMAL or NUMERIC field (MySQL 5.0.3 and up)
val = rb_funcall(cBigDecimal, intern_new, 1, rb_str_new(row[i], fieldLengths[i]));
break;
case MYSQL_TYPE_FLOAT: // FLOAT field
case MYSQL_TYPE_DOUBLE: // DOUBLE or REAL field
val = rb_float_new(strtod(row[i], NULL));
break;
case MYSQL_TYPE_TIME: { // TIME field
int hour, min, sec, tokens;
tokens = sscanf(row[i], "%2d:%2d:%2d", &hour, &min, &sec);
val = rb_funcall(rb_cTime, intern_local, 6, INT2NUM(0), INT2NUM(1), INT2NUM(1), INT2NUM(hour), INT2NUM(min), INT2NUM(sec));
break;
}
case MYSQL_TYPE_TIMESTAMP: // TIMESTAMP field
case MYSQL_TYPE_DATETIME: { // DATETIME field
int year, month, day, hour, min, sec, tokens;
tokens = sscanf(row[i], "%4d-%2d-%2d %2d:%2d:%2d", &year, &month, &day, &hour, &min, &sec);
if (year+month+day+hour+min+sec == 0) {
val = Qnil;
} else {
if (month < 1 || day < 1) {
rb_raise(cMysql2Error, "Invalid date: %s", row[i]);
} else {
val = rb_funcall(rb_cTime, intern_local, 6, INT2NUM(year), INT2NUM(month), INT2NUM(day), INT2NUM(hour), INT2NUM(min), INT2NUM(sec));
}
}
break;
}
case MYSQL_TYPE_DATE: // DATE field
case MYSQL_TYPE_NEWDATE: { // Newer const used > 5.0
int year, month, day, tokens;
tokens = sscanf(row[i], "%4d-%2d-%2d", &year, &month, &day);
if (year+month+day == 0) {
val = Qnil;
} else {
if (month < 1 || day < 1) {
rb_raise(cMysql2Error, "Invalid date: %s", row[i]);
} else {
val = rb_funcall(cDate, intern_new, 3, INT2NUM(year), INT2NUM(month), INT2NUM(day));
}
}
break;
}
case MYSQL_TYPE_TINY_BLOB:
case MYSQL_TYPE_MEDIUM_BLOB:
case MYSQL_TYPE_LONG_BLOB:
case MYSQL_TYPE_BLOB:
case MYSQL_TYPE_VAR_STRING:
case MYSQL_TYPE_VARCHAR:
case MYSQL_TYPE_STRING: // CHAR or BINARY field
case MYSQL_TYPE_SET: // SET field
case MYSQL_TYPE_ENUM: // ENUM field
case MYSQL_TYPE_GEOMETRY: // Spatial fielda
default:
val = rb_str_new(row[i], fieldLengths[i]);
#ifdef HAVE_RUBY_ENCODING_H
// rudimentary check for binary content
if ((fields[i].flags & BINARY_FLAG) || fields[i].charsetnr == 63) {
rb_enc_associate_index(val, binaryEncoding);
} else {
rb_enc_associate_index(val, utf8Encoding);
}
#endif
break;
}
rb_hash_aset(rowHash, field, val);
} else {
rb_hash_aset(rowHash, field, Qnil);
}
}
return rowHash;
}
static VALUE rb_mysql_result_each(int argc, VALUE * argv, VALUE self) {
VALUE opts, block;
mysql2_result_wrapper * wrapper;
unsigned long i;
GetMysql2Result(self, wrapper);
rb_scan_args(argc, argv, "01&", &opts, &block);
if (wrapper->lastRowProcessed == 0) {
wrapper->numberOfRows = mysql_num_rows(wrapper->result);
if (wrapper->numberOfRows == 0) {
return Qnil;
}
wrapper->rows = rb_ary_new2(wrapper->numberOfRows);
}
if (wrapper->lastRowProcessed == wrapper->numberOfRows) {
// we've already read the entire dataset from the C result into our
// internal array. Lets hand that over to the user since it's ready to go
for (i = 0; i < wrapper->numberOfRows; i++) {
rb_yield(rb_ary_entry(wrapper->rows, i));
}
} else {
unsigned long rowsProcessed = 0;
rowsProcessed = RARRAY_LEN(wrapper->rows);
for (i = 0; i < wrapper->numberOfRows; i++) {
VALUE row;
if (i < rowsProcessed) {
row = rb_ary_entry(wrapper->rows, i);
} else {
row = rb_mysql_result_fetch_row(argc, argv, self);
rb_ary_store(wrapper->rows, i, row);
wrapper->lastRowProcessed++;
}
if (row == Qnil) {
// we don't need the mysql C dataset around anymore, peace it
rb_mysql_result_free_result(wrapper);
return Qnil;
}
if (block != Qnil) {
rb_yield(row);
}
}
if (wrapper->lastRowProcessed == wrapper->numberOfRows) {
// we don't need the mysql C dataset around anymore, peace it
rb_mysql_result_free_result(wrapper);
}
}
return wrapper->rows;
}
/* Ruby Extension initializer */
void Init_mysql2_ext() {
rb_require("date");
rb_require("bigdecimal");
cBigDecimal = rb_const_get(rb_cObject, rb_intern("BigDecimal"));
cDate = rb_const_get(rb_cObject, rb_intern("Date"));
cDateTime = rb_const_get(rb_cObject, rb_intern("DateTime"));
VALUE mMysql2 = rb_define_module("Mysql2");
VALUE cMysql2Client = rb_define_class_under(mMysql2, "Client", rb_cObject);
rb_define_singleton_method(cMysql2Client, "new", rb_mysql_client_new, -1);
rb_define_method(cMysql2Client, "initialize", rb_mysql_client_init, -1);
rb_define_method(cMysql2Client, "close", rb_mysql_client_close, 0);
rb_define_method(cMysql2Client, "query", rb_mysql_client_query, -1);
rb_define_method(cMysql2Client, "escape", rb_mysql_client_escape, 1);
rb_define_method(cMysql2Client, "info", rb_mysql_client_info, 0);
rb_define_method(cMysql2Client, "server_info", rb_mysql_client_server_info, 0);
rb_define_method(cMysql2Client, "socket", rb_mysql_client_socket, 0);
rb_define_method(cMysql2Client, "async_result", rb_mysql_client_async_result, 0);
rb_define_method(cMysql2Client, "last_id", rb_mysql_client_last_id, 0);
rb_define_method(cMysql2Client, "affected_rows", rb_mysql_client_affected_rows, 0);
cMysql2Error = rb_define_class_under(mMysql2, "Error", rb_eStandardError);
cMysql2Result = rb_define_class_under(mMysql2, "Result", rb_cObject);
rb_define_method(cMysql2Result, "each", rb_mysql_result_each, -1);
VALUE mEnumerable = rb_const_get(rb_cObject, rb_intern("Enumerable"));
rb_include_module(cMysql2Result, mEnumerable);
intern_new = rb_intern("new");
intern_local = rb_intern("local");
sym_symbolize_keys = ID2SYM(rb_intern("symbolize_keys"));
sym_reconnect = ID2SYM(rb_intern("reconnect"));
sym_database = ID2SYM(rb_intern("database"));
sym_username = ID2SYM(rb_intern("username"));
sym_password = ID2SYM(rb_intern("password"));
sym_host = ID2SYM(rb_intern("host"));
sym_port = ID2SYM(rb_intern("port"));
sym_socket = ID2SYM(rb_intern("socket"));
sym_connect_timeout = ID2SYM(rb_intern("connect_timeout"));
sym_id = ID2SYM(rb_intern("id"));
sym_version = ID2SYM(rb_intern("version"));
sym_sslkey = ID2SYM(rb_intern("sslkey"));
sym_sslcert = ID2SYM(rb_intern("sslcert"));
sym_sslca = ID2SYM(rb_intern("sslca"));
sym_sslcapath = ID2SYM(rb_intern("sslcapath"));
sym_sslcipher = ID2SYM(rb_intern("sslcipher"));
sym_async = ID2SYM(rb_intern("async"));
#ifdef HAVE_RUBY_ENCODING_H
utf8Encoding = rb_enc_find_index("UTF-8");
binaryEncoding = rb_enc_find_index("binary");
#endif
}
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