Wrong default port of SocketIO connection

[dumganhar]

• cocos2d-x version: 3.14.1
• devices test on: ALL platforms
• developing environments
  • NDK version: r10e
  • Xcode version: 8.2.1
  • VS version: 2013, 2015
  • browser type and version: N/A

SIOClient* SocketIO::connect(const std::string& uri, SocketIO::SIODelegate& delegate)
{
    std::string host = uri;
    int port = 0;  // James: Why it's initialized with 0?
    size_t pos = 0;

    pos = host.find("//");
    if (pos != std::string::npos)
    {
        host.erase(0, pos+2);
    }

    pos = host.find(":");
    if (pos != std::string::npos)
    {
        port = atoi(host.substr(pos+1, host.size()).c_str());
    }

[dumganhar]

Uses Uri class to parse URL will resolve this issue.
Depend on #17455 to be merged.

[dumganhar]

fixed at #17459