例如错误代码10061， 说明服务器已经找到，但连接被服务器拒绝，
连接失败原因可能是：
- 端口号设置错误；
2.服务器没有处于监听状态 （即ServerSocket –>Active=true）；
3.数据包被服务器端的防火墙过滤掉。
附：Socket常见错误代码与描述
Socket error 0 – Directly send error
Socket error 10004 – Interrupted function //call 操作被终止
Socket error 10013 – Permission denied //c访问被拒绝
Socket error 10014 – Bad address //c地址错误
Socket error 10022 – Invalid argument //参数错误
Socket error 10024 – Too many open files // 打开太多的sockets
Socket error 10035 – Resource temporarily unavailable // 没有可以获取的资料
Socket error 10036 – Operation now in progress // 一个阻塞操作正在进行中
Socket error 10037 – Operation already in progress // 操作正在进行中
Socket error 10038 – Socket operation on non-socket //非法的socket对象在操作
Socket error 10039 – Destination address required //目标地址错误
Socket error 10040 – Message too long //数据太长
Socket error 10041 – Protocol wrong type for socket //协议类型错误
Socket error 10042 – Bad protocol option // 错误的协议选项
Socket error 10043 – Protocol not supported //协议不被支持
Socket error 10044 – Socket type not supported //socket类型不支持
Socket error 10045 – Operation not supported //不支持该操作
Socket error 10046 – Protocol family not supported //协议族不支持
Socket error 10047 – Address family not supported by protocol family//使用的地址族不在支持之列
Socket error 10048 – Address already in use //地址已经被使用
Socket error 10049 – Cannot assign requested address //地址设置失败
Socket error 10050 – Network is down //网络关闭
Socket error 10051 – Network is unreachable //网络不可达
Socket error 10052 – Network dropped connection on reset //网络被重置
Socket error 10053 – Software caused connection abort //软件导致连接退出
Socket error 10054 – connection reset by peer //连接被重置
Socket error 10055 – No buffer space available //缓冲区不足
Socket error 10056 – Socket is already connected // socket已经连接
Socket error 10057 – Socket is not connected //socket没有连接
Socket error 10058 – Cannot send after socket shutdown //socket已经关闭
Socket error 10060 – Connection timed out //超时
Socket error 10061 – Connection refused //连接被拒绝
Socket error 10064 – Host is down //主机已关闭
Socket error 10065 – No route to host // 没有可达的路由
Socket error 10067 – Too many processes //进程太多
Socket error 10091 – Network subsystem is unavailable //网络子系统不可用
Socket error 10092 – WINSOCK.DLL version out of range //winsock.dll版本超出范围
Socket error 10093 – Successful WSAStartup not yet performed //没有成功执行WSAStartup
Socket error 10094 – Graceful shutdown in progress //
Socket error 11001 – Host not found //主机没有找到
Socket error 11002 – Non-authoritative host not found // 非授权的主机没有找到
Socket error 11003 – This is a non-recoverable error //这是个无法恢复的错误
Socket error 11004 – Valid name, no data record of requested type //请求的类型的名字或数据错误
解决方法网址：http://jingyan.baidu.com/album/3c48dd34491d47e10be358b8.html?picindex=1
