Submitted by: Silver Aid (silveraid)

Hi!
If connection fails, the connection pool getting exhausted (even I use FbConnection.ClearAllPools()). Issue exists on 7.10.x.x but not in 7.5.0.0.
Example code:
**************************************************************
int retries = 0;
while (true)
{
try
{
using (var con = new FbConnection($"User=SYSDBA;Password=xxxxx;Database=db;DataSource=localhost;Port=3553;Dialect=3;Charset=NONE;MaxPoolSize=3"))
{
con.Open();
}
}
catch (Exception ex)
{
Console.WriteLine($"Connection failed: {ex.Message}");
if (!(ex is FbException)) break;
FbConnection.ClearAllPools();
if (retries++ >= 4)
{
Console.WriteLine("Giving up....");
break;
}
}

        \}

***********************************************************
With 7.5.0.0 the output is like expected:
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Giving up....

With 7.10.x.x the output is:
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Unable to complete network request to host "localhost".
Connection failed: Connection pool is full.

Thanks in advance.
Silver

Commits: 2290ec0