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author | Flavio Castelli <fcastelli@suse.com> | 2017-05-03 11:37:08 +0200 |
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committer | Alvaro <alvaro.saurin@gmail.com> | 2017-05-03 11:40:31 +0200 |
commit | ee12004ab93e54f326896e9909ba9e6a2bd11e89 (patch) | |
tree | 1ea30d204b04425ebd1dadaf8cc991d572c7f0fb /vendor/github.com/hashicorp/yamux/mux.go | |
parent | a286dc5494691c2b04c48ef6695ed0c902912c0f (diff) | |
download | terraform-provider-libvirt-ee12004ab93e54f326896e9909ba9e6a2bd11e89.tar terraform-provider-libvirt-ee12004ab93e54f326896e9909ba9e6a2bd11e89.tar.gz |
Vendor dependencies with vndr
This fixes issue #123
Diffstat (limited to 'vendor/github.com/hashicorp/yamux/mux.go')
-rw-r--r-- | vendor/github.com/hashicorp/yamux/mux.go | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/yamux/mux.go b/vendor/github.com/hashicorp/yamux/mux.go new file mode 100644 index 00000000..7abc7c74 --- /dev/null +++ b/vendor/github.com/hashicorp/yamux/mux.go @@ -0,0 +1,87 @@ +package yamux + +import ( + "fmt" + "io" + "os" + "time" +) + +// Config is used to tune the Yamux session +type Config struct { + // AcceptBacklog is used to limit how many streams may be + // waiting an accept. + AcceptBacklog int + + // EnableKeepalive is used to do a period keep alive + // messages using a ping. + EnableKeepAlive bool + + // KeepAliveInterval is how often to perform the keep alive + KeepAliveInterval time.Duration + + // ConnectionWriteTimeout is meant to be a "safety valve" timeout after + // we which will suspect a problem with the underlying connection and + // close it. This is only applied to writes, where's there's generally + // an expectation that things will move along quickly. + ConnectionWriteTimeout time.Duration + + // MaxStreamWindowSize is used to control the maximum + // window size that we allow for a stream. + MaxStreamWindowSize uint32 + + // LogOutput is used to control the log destination + LogOutput io.Writer +} + +// DefaultConfig is used to return a default configuration +func DefaultConfig() *Config { + return &Config{ + AcceptBacklog: 256, + EnableKeepAlive: true, + KeepAliveInterval: 30 * time.Second, + ConnectionWriteTimeout: 10 * time.Second, + MaxStreamWindowSize: initialStreamWindow, + LogOutput: os.Stderr, + } +} + +// VerifyConfig is used to verify the sanity of configuration +func VerifyConfig(config *Config) error { + if config.AcceptBacklog <= 0 { + return fmt.Errorf("backlog must be positive") + } + if config.KeepAliveInterval == 0 { + return fmt.Errorf("keep-alive interval must be positive") + } + if config.MaxStreamWindowSize < initialStreamWindow { + return fmt.Errorf("MaxStreamWindowSize must be larger than %d", initialStreamWindow) + } + return nil +} + +// Server is used to initialize a new server-side connection. +// There must be at most one server-side connection. If a nil config is +// provided, the DefaultConfiguration will be used. +func Server(conn io.ReadWriteCloser, config *Config) (*Session, error) { + if config == nil { + config = DefaultConfig() + } + if err := VerifyConfig(config); err != nil { + return nil, err + } + return newSession(config, conn, false), nil +} + +// Client is used to initialize a new client-side connection. +// There must be at most one client-side connection. +func Client(conn io.ReadWriteCloser, config *Config) (*Session, error) { + if config == nil { + config = DefaultConfig() + } + + if err := VerifyConfig(config); err != nil { + return nil, err + } + return newSession(config, conn, true), nil +} |