-/* redisclient.cpp -- a C++ client library for redis.
- *
- * Copyright (c) 2009, Brian Hammond <brian at fictorial dot com>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * * Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * * Neither the name of Redis nor the names of its contributors may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "redisclient.h"
-#include "anet.h"
-
-#include <sstream>
-
-#ifndef NDEBUG
-#include <algorithm>
-#include <iostream>
-#include <ctime>
-#endif
-
-#include <cstring>
-#include <cassert>
-
-#include <sys/errno.h>
-#include <sys/socket.h>
-
-using namespace std;
-
-namespace
-{
- const string whitespace(" \f\n\r\t\v");
- const string CRLF("\r\n");
-
- // Modifies in-place.
-
- inline string & rtrim(string & str, const string & ws = whitespace)
- {
- string::size_type pos = str.find_last_not_of(ws);
- str.erase(pos + 1);
- return str;
- }
-
- vector<string>::size_type split(const string & str, char delim, vector<string> & elems)
- {
- stringstream ss(str);
- string item;
- vector<string>::size_type n = 0;
- while (getline(ss, item, delim))
- {
- elems.push_back(item);
- ++n;
- }
- return n;
- }
-
- inline void split_lines(const string & str, vector<string> & elems)
- {
- split(str, '\n', elems);
- for (vector<string>::iterator it = elems.begin(); it != elems.end(); ++it)
- rtrim(*it);
- }
-
-#ifndef NDEBUG
-
- void output_proto_debug(const string & data, bool is_received = true)
- {
- string escaped_data(data);
- size_t pos;
- while ((pos = escaped_data.find("\n")) != string::npos)
- escaped_data.replace(pos, 1, "\\n");
- while ((pos = escaped_data.find("\r")) != string::npos)
- escaped_data.replace(pos, 1, "\\r");
-
- cerr
- << time(NULL) << ": "
- << (is_received ? "RECV '" : "SEND '")
- << escaped_data
- << "'"
- << endl;
- }
-
-#endif
-
- class makecmd
- {
- public:
- explicit makecmd(const string & initial, bool finalize = false)
- {
- buffer_ << initial;
- if (!finalize)
- buffer_ << " ";
- }
-
- template <typename T>
- makecmd & operator<<(T const & datum)
- {
- buffer_ << datum;
- return *this;
- }
-
- template <typename T>
- makecmd & operator<<(const vector<T> & data)
- {
- size_t n = data.size();
- for (size_t i = 0; i < n; ++i)
- {
- buffer_ << data[i];
- if (i < n - 1)
- buffer_ << " ";
- }
- return *this;
- }
-
- operator std::string ()
- {
- buffer_ << CRLF;
- return buffer_.str();
- }
-
- private:
- ostringstream buffer_;
- };
-
- // Reads N bytes from given blocking socket.
-
- string read_n(int socket, ssize_t n)
- {
- char * buffer = new char[n + 1];
- buffer[n] = '\0';
-
- char * bp = buffer;
- ssize_t bytes_read = 0;
-
- while (bytes_read != n)
- {
- ssize_t bytes_received = 0;
- do bytes_received = recv(socket, bp, n - (bp - buffer), 0);
- while (bytes_received < 0 && errno == EINTR);
-
- if (bytes_received == 0)
- throw redis::connection_error("connection was closed");
-
- bytes_read += bytes_received;
- bp += bytes_received;
- }
-
- string str(buffer);
- delete [] buffer;
- return str;
- }
-
- // Reads a single line of character data from the given blocking socket.
- // Returns the line that was read, not including EOL delimiter(s). Both LF
- // ('\n') and CRLF ("\r\n") delimiters are supported. If there was an I/O
- // error reading from the socket, connection_error is raised. If max_size
- // bytes are read before finding an EOL delimiter, a blank string is
- // returned.
-
- string read_line(int socket, ssize_t max_size = 2048)
- {
- assert(socket > 0);
- assert(max_size > 0);
-
- ostringstream oss;
-
- enum { buffer_size = 64 };
- char buffer[buffer_size];
- memset(buffer, 0, buffer_size);
-
- ssize_t total_bytes_read = 0;
- bool found_delimiter = false;
-
- while (total_bytes_read < max_size && !found_delimiter)
- {
- // Peek at what's available.
-
- ssize_t bytes_received = 0;
- do bytes_received = recv(socket, buffer, buffer_size, MSG_PEEK);
- while (bytes_received < 0 && errno == EINTR);
-
- if (bytes_received == 0)
- throw redis::connection_error("connection was closed");
-
- // Some data is available; Length might be < buffer_size.
- // Look for newline in whatever was read though.
-
- char * eol = static_cast<char *>(memchr(buffer, '\n', bytes_received));
-
- // If found, write data from the buffer to the output string.
- // Else, write the entire buffer and continue reading more data.
-
- ssize_t to_read = bytes_received;
-
- if (eol)
- {
- to_read = eol - buffer + 1;
- oss.write(buffer, to_read);
- found_delimiter = true;
- }
- else
- oss.write(buffer, bytes_received);
-
- // Now read from the socket to remove the peeked data from the socket's
- // read buffer. This will not block since we've peeked already and know
- // there's data waiting. It might fail if we were interrupted however.
-
- do bytes_received = recv(socket, buffer, to_read, 0);
- while (bytes_received < 0 && errno == EINTR);
- }
-
- // Construct final line string. Remove trailing CRLF-based whitespace.
-
- string line = oss.str();
- return rtrim(line, CRLF);
- }
-
- template <typename T>
- T value_from_string(const string & data)
- {
- T value;
-
- istringstream iss(data);
- iss >> value;
- if (iss.fail())
- throw redis::value_error("invalid number");
-
- return value;
- }
-
- const string status_reply_ok("OK");
- const string prefix_status_reply_error("-ERR ");
- const char prefix_status_reply_value = '+';
- const char prefix_single_bulk_reply = '$';
- const char prefix_multi_bulk_reply = '*';
- const char prefix_int_reply = ':';
-
- const string server_info_key_version = "redis_version";
- const string server_info_key_bgsave_in_progress = "bgsave_in_progress";
- const string server_info_key_connected_clients = "connected_clients";
- const string server_info_key_connected_slaves = "connected_slaves";
- const string server_info_key_used_memory = "used_memory";
- const string server_info_key_changes_since_last_save = "changes_since_last_save";
- const string server_info_key_last_save_time = "last_save_time";
- const string server_info_key_total_connections_received = "total_connections_received";
- const string server_info_key_total_commands_processed = "total_commands_processed";
- const string server_info_key_uptime_in_seconds = "uptime_in_seconds";
- const string server_info_key_uptime_in_days = "uptime_in_days";
- const string server_info_key_role = "role";
-
- const string server_info_value_role_master = "master";
- const string server_info_value_role_slave = "slave";
-}
-
-namespace redis
-{
- redis_error::redis_error(const string & err) : err_(err)
- {
- }
-
- redis_error::operator std::string ()
- {
- return err_;
- }
-
- redis_error::operator const std::string () const
- {
- return err_;
- }
-
- connection_error::connection_error(const string & err) : redis_error(err)
- {
- }
-
- protocol_error::protocol_error(const string & err) : redis_error(err)
- {
- }
-
- key_error::key_error(const string & err) : redis_error(err)
- {
- }
-
- value_error::value_error(const string & err) : redis_error(err)
- {
- }
-
- client::string_type client::missing_value("**nonexistent-key**");
-
- client::client(const string_type & host, unsigned int port)
- {
- char err[ANET_ERR_LEN];
- socket_ = anetTcpConnect(err, const_cast<char*>(host.c_str()), port);
- if (socket_ == ANET_ERR)
- throw connection_error(err);
- anetTcpNoDelay(NULL, socket_);
- }
-
- client::~client()
- {
- if (socket_ != ANET_ERR)
- close(socket_);
- }
-
- void client::auth(const client::string_type & pass)
- {
- send_(makecmd("AUTH") << pass);
- recv_ok_reply_();
- }
-
- void client::set(const client::string_type & key,
- const client::string_type & value)
- {
- send_(makecmd("SET") << key << ' ' << value.size() << CRLF << value);
- recv_ok_reply_();
- }
-
- client::string_type client::get(const client::string_type & key)
- {
- send_(makecmd("GET") << key);
- return recv_bulk_reply_();
- }
-
- client::string_type client::getset(const client::string_type & key,
- const client::string_type & value)
- {
- send_(makecmd("GETSET") << key << ' ' << value.size() << CRLF << value);
- return recv_bulk_reply_();
- }
-
- void client::mget(const client::string_vector & keys, string_vector & out)
- {
- send_(makecmd("MGET") << keys);
- recv_multi_bulk_reply_(out);
- }
-
- bool client::setnx(const client::string_type & key,
- const client::string_type & value)
- {
- send_(makecmd("SETNX") << key << ' ' << value.size() << CRLF << value);
- return recv_int_reply_() == 1;
- }
-
- client::int_type client::incr(const client::string_type & key)
- {
- send_(makecmd("INCR") << key);
- return recv_int_reply_();
- }
-
- client::int_type client::incrby(const client::string_type & key,
- client::int_type by)
- {
- send_(makecmd("INCRBY") << key << ' ' << by);
- return recv_int_reply_();
- }
-
- client::int_type client::decr(const client::string_type & key)
- {
- send_(makecmd("DECR") << key);
- return recv_int_reply_();
- }
-
- client::int_type client::decrby(const client::string_type & key,
- client::int_type by)
- {
- send_(makecmd("DECRBY") << key << ' ' << by);
- return recv_int_reply_();
- }
-
- bool client::exists(const client::string_type & key)
- {
- send_(makecmd("EXISTS") << key);
- return recv_int_reply_() == 1;
- }
-
- void client::del(const client::string_type & key)
- {
- send_(makecmd("DEL") << key);
- recv_int_ok_reply_();
- }
-
- client::datatype client::type(const client::string_type & key)
- {
- send_(makecmd("TYPE") << key);
- string response = recv_single_line_reply_();
-
- if (response == "none") return datatype_none;
- if (response == "string") return datatype_string;
- if (response == "list") return datatype_list;
- if (response == "set") return datatype_set;
-
- return datatype_none;
- }
-
- client::int_type client::keys(const client::string_type & pattern,
- client::string_vector & out)
- {
- send_(makecmd("KEYS") << pattern);
- string resp = recv_bulk_reply_();
- return split(resp, ' ', out);
- }
-
- client::string_type client::randomkey()
- {
- send_(makecmd("RANDOMKEY", true));
- return recv_single_line_reply_();
- }
-
- void client::rename(const client::string_type & old_name,
- const client::string_type & new_name)
- {
- send_(makecmd("RENAME") << old_name << ' ' << new_name);
- recv_ok_reply_();
- }
-
- bool client::renamenx(const client::string_type & old_name,
- const client::string_type & new_name)
- {
- send_(makecmd("RENAMENX") << old_name << ' ' << new_name);
- return recv_int_reply_() == 1;
- }
-
- client::int_type client::dbsize()
- {
- send_(makecmd("DBSIZE"));
- return recv_int_reply_();
- }
-
- void client::expire(const string_type & key, unsigned int secs)
- {
- send_(makecmd("EXPIRE") << key << ' ' << secs);
- recv_int_ok_reply_();
- }
-
- void client::rpush(const client::string_type & key,
- const client::string_type & value)
- {
- send_(makecmd("RPUSH") << key << ' ' << value.length() << CRLF << value);
- recv_ok_reply_();
- }
-
- void client::lpush(const client::string_type & key,
- const client::string_type & value)
- {
- send_(makecmd("LPUSH") << key << ' ' << value.length() << CRLF << value);
- recv_ok_reply_();
- }
-
- client::int_type client::llen(const client::string_type & key)
- {
- send_(makecmd("LLEN") << key);
- return recv_int_reply_();
- }
-
- client::int_type client::lrange(const client::string_type & key,
- client::int_type start,
- client::int_type end,
- client::string_vector & out)
- {
- send_(makecmd("LRANGE") << key << ' ' << start << ' ' << end);
- return recv_multi_bulk_reply_(out);
- }
-
- void client::ltrim(const client::string_type & key,
- client::int_type start,
- client::int_type end)
- {
- send_(makecmd("LTRIM") << key << ' ' << start << ' ' << end);
- recv_ok_reply_();
- }
-
- client::string_type client::lindex(const client::string_type & key,
- client::int_type index)
- {
- send_(makecmd("LINDEX") << key << ' ' << index);
- return recv_bulk_reply_();
- }
-
- void client::lset(const client::string_type & key,
- client::int_type index,
- const client::string_type & value)
- {
- send_(makecmd("LSET") << key << ' ' << index << ' ' << value.length() << CRLF << value);
- recv_ok_reply_();
- }
-
- client::int_type client::lrem(const client::string_type & key,
- client::int_type count,
- const client::string_type & value)
- {
- send_(makecmd("LREM") << key << ' ' << count << ' ' << value.length() << CRLF << value);
- return recv_int_reply_();
- }
-
- client::string_type client::lpop(const client::string_type & key)
- {
- send_(makecmd("LPOP") << key);
- return recv_bulk_reply_();
- }
-
- client::string_type client::rpop(const client::string_type & key)
- {
- send_(makecmd("RPOP") << key);
- return recv_bulk_reply_();
- }
-
- void client::sadd(const client::string_type & key,
- const client::string_type & value)
- {
- send_(makecmd("SADD") << key << ' ' << value.length() << CRLF << value);
- recv_int_ok_reply_();
- }
-
- void client::srem(const client::string_type & key,
- const client::string_type & value)
- {
- send_(makecmd("SREM") << key << ' ' << value.length() << CRLF << value);
- recv_int_ok_reply_();
- }
-
- void client::smove(const client::string_type & srckey,
- const client::string_type & dstkey,
- const client::string_type & value)
- {
- send_(makecmd("SMOVE") << srckey << ' ' << dstkey << ' ' << value.length() << CRLF << value);
- recv_int_ok_reply_();
- }
-
- client::int_type client::scard(const client::string_type & key)
- {
- send_(makecmd("SCARD") << key);
- return recv_int_reply_();
- }
-
- bool client::sismember(const client::string_type & key,
- const client::string_type & value)
- {
- send_(makecmd("SISMEMBER") << key << ' ' << value.length() << CRLF << value);
- return recv_int_reply_() == 1;
- }
-
- client::int_type client::sinter(const client::string_vector & keys, client::string_set & out)
- {
- send_(makecmd("SINTER") << keys);
- return recv_multi_bulk_reply_(out);
- }
-
- client::int_type client::sinterstore(const client::string_type & dstkey,
- const client::string_vector & keys)
- {
- send_(makecmd("SINTERSTORE") << dstkey << ' ' << keys);
- return recv_int_reply_();
- }
-
- client::int_type client::sunion(const client::string_vector & keys,
- client::string_set & out)
- {
- send_(makecmd("SUNION") << keys);
- return recv_multi_bulk_reply_(out);
- }
-
- client::int_type client::sunionstore(const client::string_type & dstkey,
- const client::string_vector & keys)
- {
- send_(makecmd("SUNIONSTORE") << dstkey << ' ' << keys);
- return recv_int_reply_();
- }
-
- client::int_type client::smembers(const client::string_type & key,
- client::string_set & out)
- {
- send_(makecmd("SMEMBERS") << key);
- return recv_multi_bulk_reply_(out);
- }
-
- void client::select(client::int_type dbindex)
- {
- send_(makecmd("SELECT") << dbindex);
- recv_ok_reply_();
- }
-
- void client::move(const client::string_type & key,
- client::int_type dbindex)
- {
- send_(makecmd("MOVE") << key << ' ' << dbindex);
- recv_int_ok_reply_();
- }
-
- void client::flushdb()
- {
- send_(makecmd("FLUSHDB", true));
- recv_ok_reply_();
- }
-
- void client::flushall()
- {
- send_(makecmd("FLUSHALL", true));
- recv_ok_reply_();
- }
-
- client::int_type client::sort(const client::string_type & key,
- client::string_vector & out,
- client::sort_order order,
- bool lexicographically)
- {
- send_(makecmd("SORT") << key
- << (order == sort_order_ascending ? " ASC" : " DESC")
- << (lexicographically ? " ALPHA" : ""));
-
- return recv_multi_bulk_reply_(out);
- }
-
- client::int_type client::sort(const client::string_type & key,
- client::string_vector & out,
- client::int_type limit_start,
- client::int_type limit_end,
- client::sort_order order,
- bool lexicographically)
- {
- send_(makecmd("SORT") << key
- << " LIMIT " << limit_start << ' ' << limit_end
- << (order == sort_order_ascending ? " ASC" : " DESC")
- << (lexicographically ? " ALPHA" : ""));
-
- return recv_multi_bulk_reply_(out);
- }
-
- client::int_type client::sort(const client::string_type & key,
- client::string_vector & out,
- const client::string_type & by_pattern,
- client::int_type limit_start,
- client::int_type limit_end,
- const client::string_vector & get_patterns,
- client::sort_order order,
- bool lexicographically)
- {
- makecmd m("SORT");
-
- m << key
- << " BY " << by_pattern
- << " LIMIT " << limit_start << ' ' << limit_end;
-
- client::string_vector::const_iterator it = get_patterns.begin();
- for ( ; it != get_patterns.end(); ++it)
- m << " GET " << *it;
-
- m << (order == sort_order_ascending ? " ASC" : " DESC")
- << (lexicographically ? " ALPHA" : "");
-
- send_(m);
-
- return recv_multi_bulk_reply_(out);
- }
-
- void client::save()
- {
- send_(makecmd("SAVE", true));
- recv_ok_reply_();
- }
-
- void client::bgsave()
- {
- send_(makecmd("BGSAVE", true));
- recv_ok_reply_();
- }
-
- time_t client::lastsave()
- {
- send_(makecmd("LASTSAVE", true));
- return recv_int_reply_();
- }
-
- void client::shutdown()
- {
- send_(makecmd("SHUTDOWN", true));
-
- // we expected to get a connection_error as redis closes the connection on shutdown command.
-
- try
- {
- recv_ok_reply_();
- }
- catch (connection_error & e)
- {
- }
- }
-
- void client::info(server_info & out)
- {
- send_(makecmd("INFO", true));
- string response = recv_bulk_reply_();
-
- if (response.empty())
- throw protocol_error("empty");
-
- string_vector lines;
- split_lines(response, lines);
- if (lines.empty())
- throw protocol_error("empty line for info");
-
- for (string_vector::const_iterator it = lines.begin();
- it != lines.end(); ++it)
- {
- const string & line = *it;
- string_vector line_parts;
- split(line, ':', line_parts);
- if (line_parts.size() != 2)
- throw protocol_error("unexpected line format for info");
-
- const string & key = line_parts[0];
- const string & val = line_parts[1];
-
- if (key == server_info_key_version)
- out.version = val;
- else if (key == server_info_key_bgsave_in_progress)
- out.bgsave_in_progress = value_from_string<unsigned long>(val) == 1;
- else if (key == server_info_key_connected_clients)
- out.connected_clients = value_from_string<unsigned long>(val);
- else if (key == server_info_key_connected_slaves)
- out.connected_slaves = value_from_string<unsigned long>(val);
- else if (key == server_info_key_used_memory)
- out.used_memory = value_from_string<unsigned long>(val);
- else if (key == server_info_key_changes_since_last_save)
- out.changes_since_last_save = value_from_string<unsigned long>(val);
- else if (key == server_info_key_last_save_time)
- out.last_save_time = value_from_string<unsigned long>(val);
- else if (key == server_info_key_total_connections_received)
- out.total_connections_received = value_from_string<unsigned long>(val);
- else if (key == server_info_key_total_commands_processed)
- out.total_commands_processed = value_from_string<unsigned long>(val);
- else if (key == server_info_key_uptime_in_seconds)
- out.uptime_in_seconds = value_from_string<unsigned long>(val);
- else if (key == server_info_key_uptime_in_days)
- out.uptime_in_days = value_from_string<unsigned long>(val);
- else if (key == server_info_key_role)
- out.role = val == server_info_value_role_master ? role_master : role_slave;
- else
- throw protocol_error(string("unexpected info key '") + key + "'");
- }
- }
-
- //
- // Private methods
- //
-
- void client::send_(const string & msg)
- {
-#ifndef NDEBUG
- output_proto_debug(msg, false);
-#endif
-
- if (anetWrite(socket_, const_cast<char *>(msg.data()), msg.size()) == -1)
- throw connection_error(strerror(errno));
- }
-
- string client::recv_single_line_reply_()
- {
- string line = read_line(socket_);
-
-#ifndef NDEBUG
- output_proto_debug(line);
-#endif
-
- if (line.empty())
- throw protocol_error("empty single line reply");
-
- if (line.find(prefix_status_reply_error) == 0)
- {
- string error_msg = line.substr(prefix_status_reply_error.length());
- if (error_msg.empty())
- error_msg = "unknown error";
- throw protocol_error(error_msg);
- }
-
- if (line[0] != prefix_status_reply_value)
- throw protocol_error("unexpected prefix for status reply");
-
- return line.substr(1);
- }
-
- void client::recv_ok_reply_()
- {
- if (recv_single_line_reply_() != status_reply_ok)
- throw protocol_error("expected OK response");
- }
-
- client::int_type client::recv_bulk_reply_(char prefix)
- {
- string line = read_line(socket_);
-
-#ifndef NDEBUG
- output_proto_debug(line);
-#endif
-
- if (line[0] != prefix)
- throw protocol_error("unexpected prefix for bulk reply");
-
- return value_from_string<client::int_type>(line.substr(1));
- }
-
- string client::recv_bulk_reply_()
- {
- int_type length = recv_bulk_reply_(prefix_single_bulk_reply);
-
- if (length == -1)
- return client::missing_value;
-
- int_type real_length = length + 2; // CRLF
-
- string data = read_n(socket_, real_length);
-
-#ifndef NDEBUG
- output_proto_debug(data.substr(0, data.length()-2));
-#endif
-
- if (data.empty())
- throw protocol_error("invalid bulk reply data; empty");
-
- if (data.length() != static_cast<string::size_type>(real_length))
- throw protocol_error("invalid bulk reply data; data of unexpected length");
-
- data.erase(data.size() - 2);
-
- return data;
- }
-
- client::int_type client::recv_multi_bulk_reply_(string_vector & out)
- {
- int_type length = recv_bulk_reply_(prefix_multi_bulk_reply);
-
- if (length == -1)
- throw key_error("no such key");
-
- for (int_type i = 0; i < length; ++i)
- out.push_back(recv_bulk_reply_());
-
- return length;
- }
-
- client::int_type client::recv_multi_bulk_reply_(string_set & out)
- {
- int_type length = recv_bulk_reply_(prefix_multi_bulk_reply);
-
- if (length == -1)
- throw key_error("no such key");
-
- for (int_type i = 0; i < length; ++i)
- out.insert(recv_bulk_reply_());
-
- return length;
- }
-
- client::int_type client::recv_int_reply_()
- {
- string line = read_line(socket_);
-
-#ifndef NDEBUG
- output_proto_debug(line);
-#endif
-
- if (line.empty())
- throw protocol_error("invalid integer reply; empty");
-
- if (line[0] != prefix_int_reply)
- throw protocol_error("unexpected prefix for integer reply");
-
- return value_from_string<client::int_type>(line.substr(1));
- }
-
- void client::recv_int_ok_reply_()
- {
- if (recv_int_reply_() != 1)
- throw protocol_error("expecting int reply of 1");
- }
-}
projects / redis.git / commitdiff
