两台电脑用soap连接，老是连不上，大家能告诉我可能的原因吗

老是显示连接超时，这是错误代码：SOAP call testing
Exception in thread "main" [SOAPException: faultCode=SOAP-ENV:Client; msg=Error
connecting to 202.194.124.90:8080: java.net.ConnectException: Connection timed o
ut: connect; targetException=java.net.ConnectException: Connection timed out: co
nnect]
        at org.apache.soap.util.net.HTTPUtils.getSocket(HTTPUtils.java:200)
        at org.apache.soap.util.net.HTTPUtils.post(HTTPUtils.java:417)
        at org.apache.soap.util.net.HTTPUtils.post(HTTPUtils.java:358)
        at org.apache.soap.transport.http.SOAPHTTPConnection.send(SOAPHTTPConnec
tion.java:332)
        at org.apache.soap.rpc.Call.invoke(Call.java:282)
        at org.apache.soap.rpc.Call.invoke(Call.java:244)
        at SimpleMathClient.doRequest(SimpleMathClient.java:27)
        at SimpleMathClient.main(SimpleMathClient.java:15)
Caused by: java.net.ConnectException: Connection timed out: connect
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
        at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
        at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
        at java.net.Socket.connect(Socket.java:519)
        at java.net.Socket.connect(Socket.java:469)
        at java.net.Socket.<init>(Socket.java:366)
        at java.net.Socket.<init>(Socket.java:180)
        at org.apache.soap.util.net.SocketUtils.createSocket(SocketUtils.java:49
)
        at org.apache.soap.util.net.HTTPUtils.getSocket(HTTPUtils.java:188)
        at org.apache.soap.util.net.HTTPUtils.post(HTTPUtils.java:417)
        at org.apache.soap.util.net.HTTPUtils.post(HTTPUtils.java:358)
        at org.apache.soap.transport.http.SOAPHTTPConnection.send(SOAPHTTPConnec
tion.java:332)
        at org.apache.soap.rpc.Call.invoke(Call.java:282)
        at org.apache.soap.rpc.Call.invoke(Call.java:244)
        at SimpleMathClient.doRequest(SimpleMathClient.java:27)
        at SimpleMathClient.main(SimpleMathClient.java:15)
请按任意键继续. . .
谢谢