> For the complete documentation index, see [llms.txt](https://sandbox-docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sandbox-docs.verifone.com/adk-5.0-programmers-guide/readme/files/dir_30aba3d9bf6279a25d84abe4015711f7/dir_f7a957c8f5c8e80b5a8d4b37f193d419/dir_e8da2933844aa72825eccee783cf08f3/_com_intf_8c.md).

# ComIntf.c

[Macros](#define-members) | [Functions](#func-members) | [Variables](#var-members)

`#include <errno.h>` `#include <fcntl.h>` `#include <libgen.h>` `#include <memory.h>` `#include <pthread.h>` `#include <signal.h>` `#include <syslog.h>` `#include <sys/time.h>` `#include <sys/wait.h>` `#include <ucontext.h>` `#include <unistd.h>` `#include <stdarg.h>` `#include <stdio.h>` `#include <stdlib.h>` `#include <svc.h>` `#include "VHQTypes.h"` `#include "VHQDebug.h"` `#include "EventScheduler.h"` `#include "ComIntf.h"` `#include "VHQConfig.h"` `#include "VHQIo.h"` `#include "ciDirect.h"`

Include dependency graph for ComIntf.c:

![](/files/KXYtzHjjqndNqil0JQt3)

|         |                                                                                    |
| ------- | ---------------------------------------------------------------------------------- |
| Macros  |                                                                                    |
| #define | [ARRAY\_SIZEOF](#a083b03c5af4ad6035a7b2879c523150c)(x)   (sizeof(x)/sizeof(x\[0])) |

|               |                                                                                                                                                                      |
| ------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Functions     |                                                                                                                                                                      |
| void          | [CheckAndInitLog](#af8673306bb95c4811b31e9f1dc1a8ca3) ()                                                                                                             |
| void          | [StartNetwork](#a14218cafcf8cb7b241304a53c65c98a9) (void)                                                                                                            |
| void          | [StartCommEngine](#a4e9cf7d5bfbf9b781773b0f768525a5d) (void)                                                                                                         |
| int           | [CommInit](#a6f6bcd92cfbca713feb14635853d7fb9) (char \*pszOperatingMode, char \*pszSettings1, char \*pszSettings2, char \*pszSettings3, char \*pszSettings4)         |
| int           | [CommDeinit](#ac333116610eb7d0056863b3a922eb7d5) (void)                                                                                                              |
| int           | [CommOpen](#a2a165fe9ecfd9d0a3dff2174e65239da) (CommOpenData \*pData)                                                                                                |
| int           | [CommClose](#a76f97fa1c6daadbc4f8458957bdc4d30) (CommOpenData \*pData)                                                                                               |
| int           | [CommStatus](#a16f9e8a6cd24441d031ae50a22e463a8) (void \*pData, bool \*bUp, char \*pszIpAddress, char \*pszMacAddr)                                                  |
| bool          | [IsOnDemandProtocol](#ae929d73cf66fe1b964668c075385ac1a) ()                                                                                                          |
| int           | [CommNetConnect](#a3fe87f9ff21f10d6ebd7d26a7b14a7cc) (callback\_t eCallback, event\_set\_id\_t event\_set\_id, event\_id\_t event\_id, bool app\_approval\_required) |
| int           | [CommNetDisconnect](#acfad3a7c0027b8665f841eae2d89fc7b) (bool bForceDisconnect)                                                                                      |
| const char \* | [CommGetErrString](#af367fcd161fc82ac7c092586811c6c4f) (int err)                                                                                                     |

|           |                                                  |
| --------- | ------------------------------------------------ |
| Variables |                                                  |
| ComIntf   | [abComs](#ad1750e63792ee137ea1d36a3750b6b3f) \[] |

### DetailedDescription <a href="#detailed-description" id="detailed-description"></a>

Main communication operations. Calls functions depending on operating mode.

### MacroDefinition Documentation <a href="#macro-definition-documentation" id="macro-definition-documentation"></a>

### ARRAY\_SIZEOF <a href="#a083b03c5af4ad6035a7b2879c523150c" id="a083b03c5af4ad6035a7b2879c523150c"></a>

\#define ARRAY\_SIZEOF

### FunctionDocumentation <a href="#function-documentation" id="function-documentation"></a>

### CheckAndInitLog() <a href="#af8673306bb95c4811b31e9f1dc1a8ca3" id="af8673306bb95c4811b31e9f1dc1a8ca3"></a>

void CheckAndInitLog

### CommClose() <a href="#a76f97fa1c6daadbc4f8458957bdc4d30" id="a76f97fa1c6daadbc4f8458957bdc4d30"></a>

int CommClose

This function calls the CommClose function pointed to by ComIntf abComs to close a connection.

**Parameters**

\[in] **pData** = pointer to curl details.

#### Returns

int 1, if success

### CommDeinit() <a href="#ac333116610eb7d0056863b3a922eb7d5" id="ac333116610eb7d0056863b3a922eb7d5"></a>

int CommDeinit

This function calls the CommDeinit function pointed to by ComIntf abComs.

#### Returns

int, 1 if success

### CommGetErrString() <a href="#af367fcd161fc82ac7c092586811c6c4f" id="af367fcd161fc82ac7c092586811c6c4f"></a>

const char\\\* CommGetErrString

### CommInit() <a href="#a6f6bcd92cfbca713feb14635853d7fb9" id="a6f6bcd92cfbca713feb14635853d7fb9"></a>

int CommInit

This function calls the CommInit function pointed to by ComIntf abComs depending on the operation mode existing.

**Parameters**

\[in] **pszOperatingMode** = operating mode \[in] **pszSettings1** = arg1 for init function \[in] **pszSettings2** = arg2 for init function \[in] **pszSettings3** = arg3 for init function \[in] **pszSettings4** = arg4 for init function

#### Returns

int 1,if success

### CommNetConnect() <a href="#a3fe87f9ff21f10d6ebd7d26a7b14a7cc" id="a3fe87f9ff21f10d6ebd7d26a7b14a7cc"></a>

int CommNetConnect

This function establishes the connection.

**Parameters**

\[in] **event\_set\_id** = event set id \[in] **event\_id** = event id \[in] **app\_approval\_required** = TRUE, if application approval requires for communicating with server.

#### Returns

int 0, if connection failed.

### CommNetDisconnect() <a href="#acfad3a7c0027b8665f841eae2d89fc7b" id="acfad3a7c0027b8665f841eae2d89fc7b"></a>

int CommNetDisconnect

This function disconnects an active connection.

**Parameters**

\[in] **bForceDisconnect** = TRUE, if force disconnect

#### Returns

int 0, if connection disconnected.

### CommOpen() <a href="#a2a165fe9ecfd9d0a3dff2174e65239da" id="a2a165fe9ecfd9d0a3dff2174e65239da"></a>

int CommOpen

This function calls the CommOpen function pointed to by ComIntf abComs to open a connection.

**Parameters**

\[in] **pData** = pointer to curl details.

#### Returns

int 0, if success

### CommStatus() <a href="#a16f9e8a6cd24441d031ae50a22e463a8" id="a16f9e8a6cd24441d031ae50a22e463a8"></a>

int CommStatus

This function calls the CommStatus function pointed to by ComIntf abComs to get the status of a connection.

**Parameters**

\[in] **pData** = pointer to curl details. \[out] **bUp** = to store status, TRUE if active/IP address is present \[out] **pszIpAddress** = to store IP address \[out] **pszMacAddr** = to store Mac Address

#### Returns

int -1, if invalid status; 0, if status found

### IsOnDemandProtocol() <a href="#ae929d73cf66fe1b964668c075385ac1a" id="ae929d73cf66fe1b964668c075385ac1a"></a>

bool IsOnDemandProtocol

### StartCommEngine() <a href="#a4e9cf7d5bfbf9b781773b0f768525a5d" id="a4e9cf7d5bfbf9b781773b0f768525a5d"></a>

void StartCommEngine

### StartNetwork() <a href="#a14218cafcf8cb7b241304a53c65c98a9" id="a14218cafcf8cb7b241304a53c65c98a9"></a>

void StartNetwork

### VariableDocumentation <a href="#variable-documentation" id="variable-documentation"></a>

### abComs <a href="#ad1750e63792ee137ea1d36a3750b6b3f" id="ad1750e63792ee137ea1d36a3750b6b3f"></a>

ComIntf abComs\\\[\\]

**Initial value:**

```cpp
= { { "Direct", FALSE, Direct_init, Direct_deinit, Direct_open,
   Direct_close, Direct_status, Direct_NetConn, Direct_NetDisconn,
   Direct_ErrString },
   }
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://sandbox-docs.verifone.com/adk-5.0-programmers-guide/readme/files/dir_30aba3d9bf6279a25d84abe4015711f7/dir_f7a957c8f5c8e80b5a8d4b37f193d419/dir_e8da2933844aa72825eccee783cf08f3/_com_intf_8c.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.